Post pics.

Measure the bore too

xDSMFreakx said:

I've Been tearing down a gsx and just separated the head from the block. and the piston domes read t3d-Tm1.

Click to expand...

Are you sure it's not 63d T m1.00

Some extra info to get you started. http://www.dsmtalk.com/forums/showthread.php?t=179455 But I second what has been said, it's probably "63DT" which means stock pistons for a turbo engine. Also post a pic so we can help you more

Pic of one of the Pistons sorry it took so long to reply guys

Some kind of jdm 7-bolt turbo engine. Either an rvr or Evo1-2.

More photos

Looks like an evo1 gsr engine/trans.

Pistons are Evo I/II and the gearbox is from a I. You ,sir, have an Evo 1 drivetrain

http://evo123.net/forum/general/evo-chat/7543-engine-differences
http://www.dsmtuners.com/threads/resolved-transmissions-bar-codes-serial-numbers.114903/

the transfer case and the rear end are 2g... I'm assuming whoever had it before maybe purchased a jdm engine/tranny package as a replacement

Interesting...Has it run in this configuration yet? If not, make sure that the front diff crown and pinion gears being used are the DSM ones or else your front and rear wheels will turn at different speeds. Very very bad