The difference in a lotus mould to a kitcar is lots different.I’ve worked on lotus eTc and even bmw use fiberglass boots etc on some of there cars but the finish is night and day better.dna kits were one of the best kits out there but the process of fiberglass is to use a polyester spray filler which is basically a filler sprayed on.it levels the ripple affect of the body but doesn’t sink.then it can be primed and painted.primer shrinks and if applied too thick to cover ripples it will shrink back in time.
It’s all in the prep work.anyone can paint one but if the prep isn’t good enough then it will turn out no good.
A steel panel is straight.no ripples or chance of sinking back.most body shops don’t know what polyester spray filler is.they just do standard work.but some old school body shops use poly but the price to do this procedure is increasing year by year.I’ve done loads now and the process of blocking is immense.
It’s a tough job snd the prices reflect that work