My body is completely disassembled and I will be putting full floor pan/firewall in soon. My question is regarding all the interior crevasses (inside of door, inside rear 1/4 window cavity, underside of roof skin,etc.). How do you prep these areas. I have a pressure blaster and soda blaster. Do you sandblast (wow, messy) or simply wash and scotchbrite, then paint. Do i paint then undercoat or just undercoat. There are so many products out there its confusing. Rust encapsulators, rust converters, metal preps, marine cleans. I called Eastwood and they basically answered "yes, you need that" to all of my questions. Needless to say I don't want $2k of unused cans and jugs setting on my shelves. Thanks for the help.