Here is how a stock supra is, there are urethane side skirts and front and rear bumpers, you can see the gaps in this pic
This guy molded in the rear bumper and skirts… I think this would be extremelly prone to cracking at the mold since urethane is somewhat flexible and the body is steel. Is this just done for showcars only or something or can you actually expect the mold to hold without any issues?
I think it makes the car look alot cleaner, especially on a white car.
Generally, I hate it when people mold body parts together. I like body lines, gives a car charecter. It also makes things a bitch to repair, and I tend to take things apart… a lot.
urethane is decently strong, but as will any kind of “molding”, you must be sure to reinforce the mold like the body. otherwise anytime pressure is put on the mold, “new body part” it will break apart at that mold.
boat fiberglass is nice and strong, its what i used to put together my subarus front airdam when it get ripped off by a truck tire.