Chassis engineering has closed. I just ordered one of their rear spring kits last week and did receive it yesterday. I don't know if you can still get one through Summit racing or not. I have never had a issue with Heidts or any of the other weld in kits. you box the rails in anyways so it should not be a problem. I actually like the weld in kits better because they don't look so clumsy after they are installed vs the bolt in style. Each to his own. I have 35000 miles on my truck and about the same on my coupe both have Heidts fronts under them. never had an issue with either one.
