Thanks to all who have helped me!! Geoffrey was kind enough to host the pictures of my two RPO labels, they can be found as a link within the 9th post of thread with the subject of '93 SE incorrect RPO codes"
Again, in looking at these two cars side by side, ignoring the colors, the only difference I can see is one has traction and TFE, and they have a different suspension stiffness (FE1 & F41) But, there are a lot more differing RPO codes on the labels. Thank you all for the help. Also, he posted a picture of Black Bonny taken just a few months ago.. hard to believe that the undercarriage is rotted away!!
Mike

If the F41 suspension is on the parts car, save it. And you knew you had the SLE package, right? And keyless entry?

yes, the parts car has the F41, and I KNOW black bonny is an SLE, and I am pretty sure the parts car is too.
What'* involved with the F41 package? Why so desireable? What components are affected and should I swap them over during the resto?? Thanks, Mike

Fixed second RPO code picture so it is readable

the F41 has the largest available sway bars and the largest diameter coils (for the springs) this means that the springs are the stiffest

The answer on the F41 is they are the best performance parts available from the factory. Take a corner on them and you'd know. Take a corner on some of the wimpy ones and you'd be dead.

The different stages overlap. Each "F" has about 5 typical diameters. F41 overlaps the FE2 on the SSEi'* and some SSE'*. They're the same size swaybars as the SSEi.

So basicly, I have SSEI suspension on the parts car? When this car is done, my plan is to have a sunny Sunday car, keep forever, bring to car shows when it'* old enough. I have no interested in pushing the car to its limits. Is there any resale value to the F41 parts?
Aside from this, the original reason for posting both RPO labels was to see what was different with these cars, for the purpose of knowing where I may have compatibility issues with the parts. Can anyone, in a nut shell, tell me the differences? Since the option packages (ISC & ISD) contain items that may not show up individually on the RPO label, I think maybe the easiest way would be if someone can tell me precisely what RPOs are contained within each package, so I can do a side-by-side comparison.
Also, it was mentioned earlier in this thread that option package 3 (ISC) has TFE steering, and trust me, the steering on that car is original, and there is no electrical connection to the pump. The parts car, the one with ISD & F41, does.
My plan all along was to use the steering rack out of the parts car, since the rack in Black Bonny is shot, so I will retain the stiffer steering. But, many years ago I replaced all 4 struts with aftermarket Monroes, and put air struts in the rear. (We spend a lot of time traveling to see family, and I hated the rear end sag). These came with a lifetime warrantee, and I planned on swapping them for new ones for free when the resto was at that stage, but I wonder if I should get the airs, or something else, if I plan on using the F41 stuff. Any thoughts? Thanks, Mike

F41 is by far the rarest Suspension package. SSE and SSEi'* have the FE2. SO yes it is desireable, from a handeling standpiont. IF it was me I would install the F41 components, on your car

here is the list of RPO'* so you can compare
http://www.bonnevilleclub.com/techinfo/?article=54


I would use the F41 Sprigns and the Sways with all the new struts

..just two questions:
1) Can anyone tell me the difference between Option package 4 (ISD) and option package 3 (ISC)?
2) What is RPO Y52?

These are the only mysteries I have left in deciphering the differences in these two cars. By the way, thanks for the link to the RPO codes, but several months ago I "googled" for RPO codes and found that page, which is how I found this Bonneville Club!!
Thank you all! Mike.