If you go with the chief style. It'll be well over 1000hp pushing 1100 depending on who builds it and what componets are used. 1050hp on my little 522ci and shooting for 1075-1100 soon. This is with 18* Brodix Oval port Big Dukes from Curtis Boggs. I would give him a call or heck he might even post on here as he comes on here.