Just picked up this old girl, with heaps of spare parts inc dot head and cosworth pistons, Yoshi valves , short stroke block etc . Anyway it was ex race bike and now has low comp on 2 cylinders (according to old owner) it will run with choke on which seems strange if internally damaged, owner said he was riding it made a noise and now it's like this. Planing to pull head off and have a look but clearly head is not stock, he said possibly it had a bandit head is that possible? Anyway I'm in two minds as to weather to go big bore setup or repair as is. Before the mishap it made 128hp on the dyno, what would be expected power from big bore setup?