It's not the HP but the Torque that will bother it. Wish we could rebuild a basic trans down here for $1500, already spent more than that on parts and kit without finding anyone who knows enough about them to go further or order in what's missing. A decent, ready-to-go unit would be far cheaper, even with shipping, but you would need to find a reputable place to throw that sort of coin around knowing warranty is worthless as is chasing them up for problems later if not done how you wanted. It would be good to know someone who bought one of these transmissions rather than rebuild their own, and how it's holding up years on.