Why dont you ask the guys on Pro-Touring.com? LOL I thought I recognized that handle.
What I have done is this:
SATURATE a rag in Aircraft Paint remover. Place the rag on the part of the car and leave it there for about 30 minutes. Saturate another rag and put it on another part. Take the first rag off, spray it down with water to neutralize it the remover. Use some stuff you can get at Advanced Auto called 'Right Stuff'. You pour/spray it on bare metal. It is suppsoed to be a rust converter (but all those chemicals like POR and so called rust-converters dont really work well.) The point, I guess, is that it has a zinc base to it that actually works as a really good temporary metal protector. I put it on bare metal to keep surface rust from appearing. I have a car in it now. It has been for about 3 months and so far so good. Plus if you sand it down before you wanna paint, apply another coat and let it sit for a few hours, you get a nice ruff base you can apply primer too
EDIT: Sorry, I just reread your post. You dont want body work. I would take it to a sand blaster. My sand blaster in Columbus Ohio is going to do my 79 TA Subframe for 100 bucks. Might be worth it for you to do this.