The Bonneville GXPs are failing. This post shows two southern GXPs with failed engines for an asking price of $3000. Likely get these for 1200-1600 each. Even at $1200, the cost to get back on the road is large, as the NorthStar is a very expensive rebuild. If you are in the market for used GXP parts, they are going down in price as people are salvaging these vehicles rather than repair them.

Found this 2004 Bonneville GXP in a good looking blue for $3000.

Only a few issues:
Failed engine
clear coat pealing
torn seat

And who knows what else. LMAO...

PONTIAC GXP ONLY 2200 BUILT

Here is a much better GXP for same asking price:
Xtra clean 04 Bonneville GXP, need motor!

i wonder how difficult it would be to put a l36 or a l67 in a gxp

Thats a great question. I have not found anyone that has converted a GXP to another engine.

It would not be hard at all. You would need the engine, transmission, all mounts, engine harness, computer, air intake, and probably a few other small items from a v6 engine bay. As long as you can unbolt stuff and swap parts, you can do it (well ok you'll need a trans jack and engine hoist as well). It'* still the same underlying G platform (recoded as H).

Harofreak00 did it over on Pontiac Bonneville Club.

Build is fully documented here:

L67 GXP build (update: 9/16/13) : Performance & Brainstorming

Interesting....

figured the mechanical part would be fairly easy because the engine was available in that body style/year but i was more interested in what it would take to make everything electronic to work, gauges, pcm, etc, they didnt get into that to much.

always thought a l36 gxp would be a cool car, the sle'* are real rare around here at least and add too that a decade of rust, you never see a decent one for sale. the gxp on the other hand people dont drive them too much because the mileage sucks. and seem to be in better shape

Jolly,

Thanks for posting the thread. After reading it- it seems swapping out the N* for L67 is not a easy or inexpensive project. Requires a handful of custom made products. Seems getting the N* rebuilt is about half the cost of the L67 swap. And then you have no hassles. Seems the only advantage to the swap is the amount of mods that van be incorporated into a L67

thats what that guy did on the engine, it wouldnt be any where near that if you just got a regular one. i bet you could do it for 1000-1500, if you found a wrecked bonnie