Alrightt so i own a 2000 pyitr, when i bought the car it came with a 4-1 jdm header, connected to a jdm cat converter (which from what ive been reading is shorter then the usdm cat), then too a hks hi power catback... Noww i want to change it back to a stock itr exhaust (jdm or usdm). So im thinkin i have 2 options, 1 option is to take my hks catback off, buy a jdm b pipe and a jdm muffler to make a full jdm exhaust. My second option would be to swap my hks catback for my buddys usdm itr catback.. If i did that though i would need to buy a usdm cat and possibly even a usdm header and downpipe to make a full usdm exhaust.

Any suggestions on what direction i should go in to change it back to stock?

also if i were too buy a jdm b pipe from passwordjdm would it connect too my jdm cat or would it be modified to fit onto a usdm cat

Post may be confusing but thanks gentelmen

 

B pipe needs to be "jdm length" when using a jdm cat(12", I believe). All axlebacks are the same, although, the oem B pipe uses a donut gasket flange. any B pipe should bolt to the 2.5" cat flange.
Talk to Dave at SMSP.

 

ok.. so where can i find a jdm b pipe that is actual jdm length and not usdm length, soo that its long enough to bolt on to my jdm cat

 

or get usdm cat and b pipe. Only I don't know if there are length differnces in the JDM and USDM header as well. Just go all usdm or all jdm. Problem Solved!