Boy, I don't know...I've done limited sandblasting and it really makes a mess. I've also stripped cars using DA sander and course grit. I'm not convinced that bare metal is a good idea. Factory base coats are real good. and that's where your media selection comes in.

I recently finished the stripping of undercoating from the 59 El Camino...heat gun and scraper followed by scotchbrite pads and laquer thinner. thankless, hard, dirty...uugghhhh

what is it you want to accomplish with the media blast anyway?