I'm assuming the extra 400.00 is for new rods..It would be a sloppy mechanics style "stick it in and let it eat" type deal. Let it eat as in, I'm going to drive around and not make any boost. I don't know how I'm going to come up with $2400 yet either. It's not just couch change.
The jy engine thing is a bandaid. There's probably cast, or hyper u craptic pistons in that engine with a ring end gap set tight for the n/a combo it was intended for.
Too much heat from boost, or One rattle from detonation will end that option in a minute.