I sure wish @Pretzer46 would come back and tell us if he had any success getting those screws out.
He just posted some pics of his truck in Project Journals, but hasn't been back here to this thread.
It's a war. I've lost many battles and have no plan to retreat, but also no options as I cannot find a reman frame in stock anywhere.
I drilled a couple of the lower frame screws out to 1/8 or so to accept an extractor. Which readily snapped off in the hole leaving a hardened steel sleeve in an already seized cavity. I've had some success with diamond tip dremels to make headway in carving out this issue but it seems like the metal(s) just seem to be joining together under the heat. I've taken a break from it while soaking it in oil while I soak in more effective solutions over ice. No good news sorry!
