You shouldn't have any problems getting common spares for that engine, Shifty. I don't see a replacement camshaft as a common spare - they are seldom needed, and might cost more than you'd want to spend on a 1970 engine, considering that you could probably buy a second hand engine in good condition for not very much. However as a general rule, the parts are available both locally and from US suppliers. I think most Outdoorking members buy them from the on-line store.