Making progress Bart, good work. Interesting use of the Milodon primary timing gear. Do you know what the specs on the Munro cams are? I recall speaking to Paul when asking him about his parts, he said his cams were relatively mild with a power peak under 6000rpm.
Those heads must have been milled a fair bit. The chambers in my iron heads came in at 123cc. Do those heads have a number stamped on them, on the rear end that faces the firewall?