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If you want to coat the inside of your frame with the POR-15, Take a sponge and poke a hole through it and put a small I bolt through it with washers and nuts on both sides. Tie a line to it. 550 cord works well. Fish the line through your frame, or any location you can't get to. Coat the surface of the sponge with the POR-15 and then draw the sponge through the area you are trying to coat. It may take a couple trips to get the coverage you want, but big deal.
Do the larger areas first and then as you get to smaller openings or areas, trim the sponge so it can fit.
Wear gloves or post a pic of your hands when you're finished.
There is a book floating around "CHEVY High Performance" I think is the name. It tells you all the weld and gusset locations. Give the forum a search, i'm sure you'll find it.
There is a book floating around "CHEVY High Performance" I think is the name. It tells you all the weld and gusset locations. Give the forum a search, i'm sure you'll find it.