There is absolutly no rust at all. The motor was professionally installed and they compression tested, reset valves adjusted everything. Car runs super strong I've driven it for 2 yrs (garaged winters) with absolutly no problems. I've used mobile 1 since day one, she ran 15.2 with full stereo and 14.7 w/o stereo (only ran twice). I have the custom fiberglass box and sub and a 5 farad cap I'll throw in if you want. Let me know what else I can answer for you email is sweetride4me@yahoo.com