im running an lce header(which i havent installed yet haha), to a magnaflow carsound cat, 2.00 pipe to Flowmaster delta flow 50 series, to 2.25 out. thats what eb reccomends. it works real well, added 2 mpg in the city, gave me some more power, and sounds alright. i think 2.50 is way too big. thats what the downey cat back system that everyone hates is right?

87 22R PU, 2? body lift, 33? BFG muds, 4.88's, F&R Lock-Rights, Rancho Shocks, EB's Street RV Head w/ 268 Cam, LCE Header, 2" to 2 1/4" exhaust, Flowmaster 50 series, Magnaflow high flow cat, complete Herculined SR5 interior, V6 BB, MC, and calipers.