ENGINE SWAP

Fred, that's 500 at WOT.
First, on the street,you will rarely if ever get a chance to go WOT, and second, it will instantly spin at half throttle, maybe less,so it won't matter anyway.If you're worried, just put a 2bbl on it lol. Ok a 600VS, then.
The only time the powertrain will be stressed, will be if you track it, and even then only with slicks, and even then only if you have a serious traction aider, and even then; it's only a 2500TC you said.
GearVender says IIRC,their base unit will allow 1000hp thru to pass thru it, so you should be ok for awhile,lol.
My boys really want me to go with the 445hp and they said they would get together and pay for half so it's a good deal and will be there car some day any way.