I have a 95 SC400, looking at buying some headers from PPE Engineering and Tanabe Medallion Touring Axlebacks. I'm not sure what diameter piping i should go with for the rest of it and whether or not i should directly switch over to two cats. One for each bank of cylinders and run an X-pipe or keep the one cat and do a Y-pipe from the headers and split at the axle. Any past experiences on how this was could be done and what would be more beneficial is great

 

3 inch stainless steel, x pipe, no cats

 

This might give you some ideas...
http://www.lextreme.com/greddysc.html

 

youtube sc400 exhaust, there are many exhaust sound clips. this should help u decide what u want to do

 

Thanks guys,

I think i'll be keeping the cats though, need them for smog purposes.