Not sure why everyone keeps bring up the 481X deal. That is NOT a block that takes a Mopar head. It takes a 481X head, which is an Oldsmobile wedge head. Also the block is a 4.840 bore space and takes a Chevy crank. Basically a Chevy block, with skirted sides and provisions for a front drive dist. It LOOKS nothing like a Mopar block.
A TFX block is a HEMI block. A TFX or 481X block can be forged or billet
