Stock R34 Muffler Inlet Size?

[SKLgodzilla]

Hey

Just one really quick question, my friend called me up b4 and asked me, do I kno wat the stock R34 muffler inlet pipe size is as she wants a new muffler for her Skyline.. and since my own R34's exhaust system and muffler is all aftermarket alas i hav no idea wat the original size was......

Does anyone kno the stock R34's Muffler inlet pipe diameter..? (its the pipe that connects to the muffler's inlet pipe which should be the same size to fit... if im makin any sense....lol) and also is it the same for the turbo as it is for the NA..? cos the exhaust system's functional theory is totally different for the turbo and the NA and i d reckon the the piping size would be diff too... but i could be wrong...: )

cheers!!

C