Anybody use larger stainless cladding bolts?

That was me. I used furniture inserts in the body in place of the plastic inserts, then I used toilet washers and license plate security bolts.
http://www.vehicross.info/gallery/sh...spikes&cat=500

http://www.vehicross.info/gallery/sh...spikes&cat=500

There are actual metal (furniture) inserts epoxied in place of the cheap plastic body inserts. Then the license plate spikes screw in with a wrench (washers behind them) So no double sided tape. All metal, so stronger than stock.