well, as tempted as I was to do this during the winter, I decided against it.
I went around my car with a small magnet, I found bondo in a few places.
Plus, my car is stripped of interior, so I'd have to do the inside too or it would look wierd.
Maybe I'll revisit the idea someday after I find a cheap 944 with a straight body and a blown motor and put an LS1 in it
Thanks for the input anyway.