I have an 83 S with stock exhaust right now. I am looking to get an RB collected header so I can use the RB cat replacement pipe with it too hook up to the stock muffler.

The thing is I only see cat replacement pipes for 84-85 models. Will one of these work? I would assume not, but ..

Do I have any other options besides custom work?

 

I personally installed the header/collector with presilencer. Sounds great and bolted right up to the rear section.

 

I assume you are talking about this presilencer?

http://www.racingbeat.com/FRmazda1.htm

 

RB header will not bolt up to their cat replacement pipe. If you do not want to get any custom work done, get the header and presilencer or the cat replacement pipe alone.