The good thing is, unlike a Windsor or a production FE block, a factory 460 will handle a tremendous amount of power, so not having to buy an aftermarket block cuts down on the initial cost.
Pete, you going to switch your order now? I think we should do a 598-604 for you instead of that 445W.....
As Keith said, it depends on the car whether or not the intake will fit. A 460 block is the tallest of any (10.320" deck height vs. 10.170" for the FE, 9.500" for the 351, and 8.200" for the 302) so you're starting out with a disadvantage.