Their kits are made out of fiberglass. and I remebered reading something over at Stangnet that there was some lining up issues. I have no clue whether they fixed that or not. Just member you get what you paid for. You go cheap you get cheap.
Well remember, it's hit and miss with a body kit. No two car panels will line up exactly. You can take two cars pulled off the assembly line at the same time take the doors and and swap em and neither on of them will line up when they bolt on.
You have to work the bumpers to get them to fit and look good. Between urethane and fiberglass, fiberglass WILL look better. Urethane is plastic and won't break. It'll end up being "Choices, choices." Show car or daily driver.
Well, if it's around 7oz of fiberglass, it's gonna take alot to crack it. Like a racoon smacking into it, and then the urthane bumper would be broke to.
Fiberglass isn't as week as lot of people think. The only difference on a daily driver between fiberglass and urthane is, that fiberglass may crack while the may just chip of on a urethane bumper if you were to run up on a curb.
When they paint fiberglass or urethane they add a flex additive so that when the part flexes, the paint won't chip off. Kinda like if your were to paint a motorcylce seat and when you put your hand down on it, the paint cracks. The additive stops that.
I'm saying if you have the extra money for urethane get it. If the kit you want only comes in fiberglass don't let that discourage you from getting it.