Yeah, $2500 plus $1500 rotating assy, and over $1600 in heads. Because everyone here has that kind of money. Anyways, get a set of stock D0VE-c heads and clean up the exhaust ports and install stiffer springs. Thats good enough to get you in the 400-450 range. To make more power, either port those or go for the interceptor heads. You may want to bump up the comp too. I have D0VE-C heads with some of the smallest chambers around and they still only generate 9 to 1 with the stock pistons. Or get a pre-prepped 460 block ready for a stroker and then get a 514 stroker kit for around $1400. Thats $700 for the block and $1400 for the rotating and now you have a huge stroker for $2300. The heads and stuff are up to you but you can see that a 514 stroker is the same price as 302-351 based stroker. You'll end up spending more on aluminum heads but you'll make up that money with the cheap used intake and standard 750 Holley. Yes heads are expensive but being carbed you dont need to buy injectors, MAF, throttle body and EFI intake. Think about it:
460:
aluminum heads-$2300 new
intake-$170 new
carb-$200
EFI 302:
aluminum heads-$1100-$1600
intake-$350-$600
TB-$150
injectors-$250
MAF-$150-200
Numbers are similar, but the 460 wins if you keep to iron heads. As for weight, if you can spring it, a 460 with aluminum heads and an aluminum intake weighs as much as an iron headed 302.