Its a in-line 4 right? Check out Motorcycle Cruiser mag June 2006. Story is Holy Honda about a 1970 Honda 750 converted to a really cool chopper. Its center fold story they mention the ‘go to guys’ as the Carter brothers, Paul and John of PJ’s cycle in Columbia Kentucky. From what I gather they do chopper style work on non HD rigs and had to make their frame adapt to the Honda. Pictures in the mag tell a better story than this, try looking and see what it does for you. Good Luck!