All I did with mine was wipe the paint off the original white paint with thinners but putting it on something flat would work really well, just make sure it's VHT. Mine are still perfect after nearly 3 yrs so it works well if done properly.

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Beaten up old 98 Gen 2 Liberty, 13.0, stock V3 STI running gear.
07 Transit motor home
69 VF & 70 VG Valiants needing full restoration
Yamaha Zooma 50cc rocket hopefully going with the Transit.