my 360 heads were stolen by machine shop

Tanking isn't going to take 40+yr old paint of, a shot cabinet will. I would charge you about that if that's all you're were having done. I would include it in any package pricing for a valve job,any ready to assemble package or complete rebuild.

Jet wash is just a start.
100 bucks to tank a intake? Keep in mind this was 16 years ago. Lol that seems outrageous to me even to today's standards. I've never worked In a machine shop tho I dont know the process. That is the one and only time I've ever been to one to get work done. I'm getting ready to go and drop my 360 off tho.
Idk why I was always under the impression hot tanking one striped it down to the bare metal and removed all the dirt grease and contaminates