Is 77 bottom end the same as 77 900 bottom end

Hello I am new to this forum, I am looking to put a on a drag bikecar tire set up on a kz 750 and was wondering will a double club foot fit on a 750 frame plus I will be. Using a 3 inch bearing offset and are the chain cover bolt pattern the same please let me know .

If ya have to ask :woohoo: ........

Never mind I see where this is going