TexasCHLforum.com

Buy a kit from a store that specializes in automotive paint.
Get a Scotchbrite pad that chucks into a drill or fits an orbital sander for the roughing up.
Buy a cheap schutz air gun to apply it.
Ditto on suggestions above re solvents and masking.

Should be able to get a pro-level job for about $150.

I've even seen a pretty good job done with the aerosol can version from Plastikote.
The advantage here is you can touch it up later with the same stuff.

I have also used the aero cans for other purposes, such as coating trailer ramps for traction, and sealing difficult roof joints.
Comes in a number of colors.
Good stuff!