Tying up the loose ends.

1986 Rx-7 ITS
I am nearing the finish of my build and have a couple of loose ends to tie up. The biggest issue is that I am looking to get a set of Delrin bushings but I am having a hard time finding complete kits. What is a good source for the bushings? What do I really need to get? Do I even need to get a complete kit? What about polyurethane? They are much cheaper from what I can see.
I am also looking at mufflers(using three inch pipe) and quick release steering wheels. What are people having the best luck with? I have seen extremely cheap quick release steering wheels on ebay,aprox $50 or so, but I am slightly worried about the quality. For the mufflers is it hard to meet sound requirements with these cars or will just any old cheap muffler work? Thanks for any help I cannot wait to get out there!!!

Take a look here for some inexpensive Delrin/UHMW options - http://www.mmr-direct.com/

There are some threads on this forum about mufflers, check those out. A cheap muffler will burn out the first session. Rotary runs very hot and very loud.

Check this place out for steering wheels - http://www.ltbmotorsports.com/