71 is a different MC. You said you don't have any braking issues so what the issue? That is the aftermarket that had ports on both sides. The 67 All B thru 69 Hemi had ports to the fender. The 68-70 B non hemi to the engine. Same MC in general terms other than port side. They did some stuff with pistons but subtle and I don't know if you can sense any difference. I have Centric on mine which is to fender side only. The 70 C also used the hemi type but with slightly different pistons internally. The 70 B/E Hemi was a shorter but fatter MC but still 1 1/8" bore.