hi, i have a 76 750k6. its missing some front brake parts, most notably the little spring that positions the brake pad. i found a great deal on a 76 750f parts bike. im sure it has the front brake part that i need. it also has a nice exhaust and stock air box and some other useable parts. im wondering though, if the rear disc from the f can be swapped to my k to replace the drum brake.