I have a close to perfect condition racing beat exhaust system for a turbo model rx7. It is the model with the 3in OD presilencer. I no longer have a turbo rx7 and want to connect it to the Na I am building. The pre silencer needs to connect to a racing beat collected header.
-is there a different pre silencer that racing beat sells which would be the correct length that I could have a new flange welded on.
-should I have a exhaust shop mangle either the header or revtII pre-silencer to make everything work.
- I would rather not go through the hassle of selling and then buying a NA system.

 

I'd modify the header, so you can change the lengths of the primaries for the powerband you're looking for. Check the n/a performance section for more info.

 

The header Won't match up to the TII Presilencer anyways.it is Off to one side a bit.(mine was).
My Suggestion is to Make a Pipe that will join the Header to the Catback..(put a Presilencer of Some Type in there).that way you don't Wreck parts.and you can save the TII presilencer for WHEN you do a SWAP!(or BUY a TII!)..
Btw,I have "A" 2.5 inch presilencer Mated to the 3 Inch RevII exhaust(Pacesetter header).I just used some Extra gaskets.It works.

 

^^good idea, I'm just worried about it being to loud.