as long as the motor is built wit hthe correct clearances, and you keep it full of oil and tune properly, your fine. stock block and crank can hold over 1000hp to the wheels. duane has dynoed at 1015hp and mibrum is likely in the 1200rwhp rang on his 7m.

the problem with 7m's is the owners. they try to boost to the moon without proper mods and tuning and blow the hg. and then drive with ater in the oil and bitch when they get rod knock. any supra you get, id rebuild the engine yourself and make sure everything is CLEAN!!!!!!!!! and the clearances are all to the proper SPECS!!!!!!!!!!!!!!!!!!. dont just slap it together and go. get the micrometer and dial bor gauges out and check EVERYTHING!!!!!. also, dont bother with piggy backs, just save a lil more and go megasquirt with a wideband!