I've been thinking about scrounging up a set of Aussie 2v heads, and having them cut for 4v valves. Any input on the subject? I tried a similar mod with an old set of 429 DOVE heads and CJ valves with pleasing results. Actually, I'd just use the old 429, but it's waaaay too much weight for the front end of my '68 Cougar. I want to go in more than just a straight line....lol I've decided on a 351 this time.