ratio411
Founding Member
In 1967, Mustangs came stock with 390s, 427s, and 428s. The 460 is the same block, so it should fit. The parts should be available at your favorite mustang supplier.
The first 3 engines you list are FE big blocks.
The 429 and 460 are '385 series' or 'Lima blocks'.
The Limas are substantially bulkier engines.
They squeeze in where an FE was, but don't use any of the same parts.