the exhaust is 2.25" true dual pipes, no crossover, into pypes m-80 mufflers. they're essentially glasspacks. rear exit as of now looks like this
the cam is from comp cams summit racing part #cca-08-422-8
grind# CS XR270HR-10
http://www.summitracing.com/parts/CCA-08-422-8/
I am extremely happy with my current combination, but things may change in the future.