LD4B OR LD340 FOR 273?? Coil mount?? Need pics

Couple of issues using the LD340, 1st the intake to head bolt holes on, IIRC, pre '67 273 V8s are drilled at a different angle than latter small blocks and 2nd the runner sizes on the LD are much larger than the intake ports in the 273 heads (LD = 340/360 large runner, 273/318 = small runner). This would cause quite a disruption in flow. The 1st issue can be resolved with re-drilling the manifolds bolt holes at the correct angle but #2 would be a performance killer.