So I found a source for the tlc rocker trim for $200 each. That means if my hackin on the running boards fails I have a not cheap, but not heartbreaking expensive fix available. So I ordered this and am taking the sawzall to them this weekend.
The current plan is the disassemble as much as possible, and lop off the remainder. I assume this will leave a hollow upside down v shape. I hope to grind the edge, then have the piece wrapped in black.
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Watching intently...