Those are silly questions. The answer is the same as any USDM. The real question comes when you have the motor. Each motor can hold different amounts. Variables are: #1 COMPRESSION. Bad compression makes a 500WHP car into a 200 WHP in no time flat. #2 Ignition system condition #3 Injector condition #4 Boost #5 ECU to allow you to run higher boost. List goes on and on. Point is, the internals are the same, you simply can't trust them to be good as they come in randomly to resellers who all swear to the moon that they only have 40k miles on them. (As if people in Japan have been buying brand new engines every time they hit 40k for the last 10yrs+ they've not been selling new Z's) If you're gonna blow money, do it the right way and pony up for a Stage 1 Longblock from Kyle, source the exterior parts (most you can get from your NA), toss on a 120K kit and have fun with a REAL engine capable of putting down real power with reliability.
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