I did a 68 2a 109 and MAN was that paint on there, I didn't strip the roof. My plan was to blast the whole thing but the aluminum panels cannot take any heat so blasting is out. I tried a couple of strippers but in the end had to buy AIRCRAFT stripper and even that took a few applications on some sections. The finished truck looked great after I prepped, primed and painted it and well worth the time and effort to remove all the junk layers. The stripper I used said "aircraft" stripper on the one gallon jugs I used that I got from an auto body supply store, not cheap and I went through quite a few.