timing, need more help!

I have finally gotten my car to run. my problem is before the car starts to run smooth the vacuum canister on the distributor hits the intake manifold.chevy gen 1 crate motoris there any fix?can I move the plug wires, can I move the plug wires??? ,help I am almost finished
sbc 350 mildly built>

Pick up the distributor and move it back/forward a tooth.