I can't seem to find the right size extensions where I live, so I'll probably have to order. (Wisconsin) I've got OD 2 1/4 pipes and I'm not sure if I should go with stainless or plated. Who would have the best selection and prices on the net?

 

I have two 2-1/4" exhaust extensions sitting right in front of me. They are 2-1/4" ID - 2"OD. I'm using them to mount 2"ID X 5" stainless steel oval tips that are 11.3 inches long on my 2-1/4" OD dual exhaust. You can get them at AutoZone for $1.49 a piece. Advance Auto and should have them too. If you can't find them there, try JC Whitney's website or do a search for exhaust extensions. Sorry if I'm not much help.