I would just get a regular blaster and blast the inside,underside,jambs,rockers, firewall.You can blast the inners of the doors if your careful[not inside].The hood and trunk is a different animal.This is how I did my hood to do it right.
I split the inner and outer shells,hand stripped the outer shell and blasted the inner bracing.Then SPI epoxy,antiflutter in between and reassembled.Then just hand strip the outside of the car to avoid damaging from peening and or heat.
I was doing a bit of research on the best method to ensure compatibility between HoldTight 102 and SPI Epoxy Primer when I came across post number #14 above. This piqued my interest so, if you have your ears on NextGen Classics, I would like to ask what your procedure is to ensure that the split trunk or hood outer panels remain usable after splitting them. I know most folk just grind the wrapped-around edge flange until its gone and replace the skin. I would love to know more. I'm currently working on a 67 GTO convertible with a rusty trunk. I've got a spare, but it is only marginally better than the original. If you have a way to get that skin off and back on, I would be very thankful to hear it. That would save me a wad of cash!
Thanks