i have decided to stay with my inline six motor and was wondering if i redo it, maybe supe it up a little will i still need to put on disc brakes, and rear end, if not fow far can i go with the motor before i have to make the changes.

 

Which motor you have doesn't make much difference about the brakes. Save up your coins and get a disk brake kit for the front. You won't need an 8 or 9 inch rear though.