5 sets of DOVE heads on ebay right now. You really don't need to go the stroker route with a 460, Just put the money into quality components instead. A buddy had a stock crank/rod 460 w/ worked DOVE heads put down over 550lb-ft from basically right off idle till 6000 rpm. It was in a truck, but he beat many a car. On a side note, he first went with KB hyper-u-craptic's, and literally pulled the wrist pin out of the piston after about three days. Needless to say, he went forged.
Well, I am no C4 expert, but lets see. Almost any Ford car or truck w/ an auto before 1980 will have a C4, it should not be hard to find a core. There are a lot of companies out there that make quality C4 components. If you want to buy a complete unit, Art Carr makes em with a brake for about 2k, FB makes a decent unit, and quite a few others. PA makes a killer unit, but pricey. Personaly, I do not think they make a good AOD, but their C4's are pretty tough. Check out clickclickracing.com forums, alot of good auto info over there.