I thought the 7m needs a 57 trim(modified CT26) to hit 400hp, I know that is the numbers I am shooting for w/my '87 Supra.

Are you running a stand-alone or using the donor 7m's ecu for air/feul management?

More than tread lightly. Leave it like you were never there, nor anyone else.
'90 X-cab 4.88's 33 BFG AT's, rr ARB, Headers, Ignition upgrade, cold air induction.
'91 X-cab 5.29's 315's BFG MT's, rr ARB, custom bumper and flatbed