I suggest you do some searching on the web as it doesn't take much to get 300 HP out of a 265 Hemi basiclly the right cam, set of good valve springs, headers & carb swap will get them moving. Most Aussie love tell stories of the V8's they beat with there Hemi 6's.
I have a mate with a 1970 Valiant Pacer with 265 Hemi 4 speed that runs 11's. If you google TNT 265 I sure you'll enjoy what you see.
