I am about to paint my car and I need to replace the side GT ground effects due to them being wavy. Next week I'm going to order my 2.5" cowl hood from Cervinis. I thought about going ahead and ordering their Cobra ground effects to replace mine. Do they just bolt on? Are there any fitment issues (lining up) with the side ground effects? Are they good quality? Thanks for any help...I'm just trying to paint this car right the first time.