can any other larger engine fit in a 93 bonneville??????? what suggestions do you have for a lot more power in my 3800????? what inexpensive upgrades can i do to get more power out of the stock 3800

This isn't directly related to forced induction, so I'm moving it to P&B.

CAI
high flow cat


a full tune up will have it running as it should too

well are you already supercharged or not?

if you aren't and you want to be, and have lots of money, I would recommend a Series I L67, or for even more power a Series II L67.

Otherwise, if you just feel like modding the L27 you have, go to http://www.seriesoneperformance.com/ for internal engine parts, cams, etc.

But otherwise just go with what has already been recommended. Keep er tuned up and such.
Good luck.

Can you put your year and trim level in your signature? What engine do you have?