My buddy did this before. You need extended a-arms, extended swing arm and stiffer shocks. He went with elka. You will need to get 540 chain I believe because otherwise it will slip. Also depending how you’re doing the intake you will need to get the bike tuned. Good luck. It’s gonna be a monster when you finish, idk why other members are commenting that but the banshee frame combined with r1 engine is nice.