Just closing the deal on a 97 Olds LSS. Supercharged

I want to know what mods out there WILL fit our cars. And are worth the time and effort.

Can anyone advise?

smaller pulley, pcm tune, FWI, colder plugs and t-stat, rockers

Any idea of the hp / tq increase from all of the above mentioned?
It'* been a long time since I've looked at L67'*

Enough you will feel it, the police will have your plates memorized and the tire place will give you a bulk discount

i'm running a 3.4" pulley with 2 heat range colder plugs, 180* t-stat, FWI with a ported */C i'd take a guess @ 40hp. All told with the above and a shift kit, someone that has it all would have to chime in i won't have a good clue til May when my tune and 1.9:1 rockers are done and i dyno mine

well my plate is easy

also headers and a high flow cat definates

I was wondering if we could even run the headers without any fittament issues (oldsmobile LSS guys).
Are you guys buying from ZZP or 3800 performance?

Tog'* are one of the bests the SLP'* have some issues from what i hear, pace setters are good if you can find them. not sure about fitment on the LSS either Danthurs or Billboost37 would know

Headers should fit fine. Do you happen to know the body style? W body will fit no problem, H body the trans dip stick will be in the way and a W body dip stick will be needed. Any engine mod that will fit the Bonneville will work on your car.