Quote Originally Posted by JITB
oops...well u know what im gettin at..lol

are they related tho j30 and the m30?
The J30 was a 4 door with a similiar engine to the VD30DE found in the N/A Z32 (intake, tuning, etc.), the M30 was a 2 door with the Z31 engine....technically the J30 replaced the M30 since one ended and other began around the same time.