Ias for Reliableity......100 percent. I installed the Phase 1 myself. 2 thousand miles since install. I drive it hard to easy. Stock half shafts and srive line . Magna flow cat back exhaust is the only mod and some Steeda suspension bits. I use the Hp for stop light drags. Took a 2016 camaro ss off the line the other night and the orange Beast made the SS owner very mad but i love my phas1 kit no leaks no noises and oil level still full and i dont run oil seperators the kit is awesome