If it's not that bad then I would get a starter kit from POR15. If you're not familiar with it, check out their website.
www.por15.com
It is great stuff. It's a three step treatment process that really works. I have it in my trunk floor because the rust wasn't bad enough to replace the floor so I stopped the rust with this stuff.
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"yeah though I walk through the valley of the shadow of rice, I will fear no turbo for torque art with me. Thy rods and thy crankshaft, they comfort me."
1965 Fastback 289 hi-po 3sp.
1973 coupe 302 4V auto. -SOLD
1994 GT 'Vert
Rust repair/Lousy inspection 
