Powder coating is just a coating that lasts just as well, just as it is
with any other form of "coating", be it done by hand with a brush, or
spray painting.
Does yer "'93 Wrangler" have or need any plastic body filler on it to
make the bodywork perfect, and can withstand the heat the 500 degree
ovens (let alone the adhesion needed) so that Powder can take too?
Powdercoating is NO better "longer lasting" than ANY "properly applied"
Urethane that is spray painted on.
Don't be misled!