I currently have their stage 3 motor and premier Packard turbo kit. I waited a while to get this turbo. So far it's been about 8 months running 15+psi and my motor is holding great. Just fine tuning the clutch to hold the power. I built my motor and assembled the kit. I know i can turn it up and all my parts will hold fine. Just diff and axles are my issues now one i turn it up more. They are great guys to deal with just they are short handed with a lot of orders. So expect a delay. I'm sure if you want their turbo kit it is only an in house build only now. I may be the last kit they sold to consumer diy. Just call and ask. Any questions I'd be glad to help.