Yeah mate, go for it, all the CB750's had 35mm fork tubes, so those 78 tubes will work fine on your 76. I've got F2 tubes in my K3, K6 tubes in my K1, (with K3 alloy sliders, you can't swap components between K0-K2 and K3-K8) and cut down XL350 "chook chaser" (dirt bike) tubes in my F2, ha ha! Cheers, Terry.
