Please note that if you have an early model 3100, which would be between 1994 and 1999, we highly recommend doing a "3400 top swap" along with this performance package to get the most out of your engine. The small port intake manifolds these older 3100 engines come with will seriously hold back your engine's ability to make power.
If you already have a 3500 or 3400 engine installed in your car that was originally equipped for the 3100, all these parts will be able to be used with these other engines as well, although some parts may require adapters to work with the 3500 (like the throttle body). If you have a 3500 engine, we suggest using our 3500 swap kit. We also sell these components individually.