Most people who arent looking to change the motors go the simple bolt-on route, that being exhaust, CAI, tune, gears+t-lok, etc
Basic bolt-ons might net you 20-30 hp if that to the rear wheels. Worth doing to start. Beyond that, without engine work ... idk small shots of nitrous? Not sure what the 94-98 3.8's can take but I would say a 75-100 might be the most you'd want on a stock motor (talk to shiner)
There are all sorts of stickies already for bolt-on info and improving our sixxers, there are also HUNDREDS of threads that will tell you how to mod your car in the best ways, just gotta search. And trust me, search will be your friend.
It depends on if you are going fuel injected or carbed.
A carbed 302 swap on a 94-95 is not that bad of swap. A 96-98 302 swap require a new K-member.
Fuel injected requires a harness swap and more. Check out the sticky on the top of the Tech forum.
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