Later down the road I want to swap out my 3.4 for an lt1. I currently have a flowmaster american thunder cat - will i have to completely change my exhaust and get a different type of flowmaster or can mine work with an lt1?

 

You will need the LT1 manifolds (or headers) and a y-pipe, but as long as your cat and cat back are 3", you should be just fine.

- Justin

 

It may not bolt up directly, depending on whether you get stock LT1 manifolds, or I'd hope, headers, and what y-pipe you get. If it doesn't bolt up though, any exhaust shop will be able to weld/cut whatever for prolly $30 or so.

 

sweet
thanks a bunch!