alright, first off i'm not a bonneville owner as you can tell by my name... but... i will be doing the 3.8l */c swap into my sunbird. so i was wondering since you are the experts on bonnevilles... what kind of aftermarket parts are available for the engine and if at all is their a bigger or upgraded supercharger available..

what year L67 are you swapping in???

The aftermarket is pretty big for the 3.8 . You can get a larger supercharger but there is also turbo kits out there. Take a look at these 2 sites I bet you'll see alot you like.

http://www.zzperformance.com/
http://www.intense-racing.com/

Ed

If it happens to be a Series 1 Supercharged engine..as in 1992-1995, hit up
www.seriesoneperformance.com
Lots of parts there to choose from.

Yeah like the other guys said, it really depends if it'* a Series 1 or 2 L67 (3.8 */C). A series one would come from a 92-95 vehicle (in almost all cases, I think the Buick Park Ave retained it a bit longer, not sure), wheras a Series 2 would be from a 96+ vehicle. The Series 2 really has more aftermarket, and it'* a lot easier to swap to a better supercharger with the S2, as there are a few direct replacements.

PS I bet your Sunbird will go like snot once it'* done eh?

Having done pulley'*. I highly recommend getting the plugs wires etc up to par...then putting one on

after looking at those sites... im gonna sart looking for the s2 l67... so far you've been a great help...

www.L67swap.com

does anyone hace the mp112 supercharger kit because that beauty really caught my eye... and its exactly what i'm looking for.

there are a few GP guys that have done the 112 conversion......i personally would just do a a GenV intercooled...that setup easily propells a Bonne deep into the 12'*