hello, i'm going tomorrow to check out a 280Z with a chevy 350 conversion. it may be a good deal at $2700 with a supposedly heavily built motor, but it's at a dealership so unfortunately i can't ask the PO any questions about the motor or conversion. i know z's pretty well but am new to the V8 thing. so, what can i look for to tell if the conversion was done well? how can i tell what's been done to the motor? i know what to look for as far as typical Z things (rust) but any V8 tips are greatly appreciated.