Because the Holley mounts move the motor, even with an A833 it would be full a drivetrain swap. Might not need to rebuild the tunnel, but I bet the shifter would crash with the crossmember and you would have to rebuild the trans mount and clutch linkage (or go hydraulic). Easy fix is to use the TTI mounts.
Sucks though as it would be nice to do the T56 swap and then the Hemi swap (or visa versa), but they will have to be done at the same time.
BTW, in my mind, the big advantages of the Holley mounts is the low mount AC compressor works on VCT motors and you can run the 6.4 SRV intake without hacking your firewall. Plus the headers are cheaper than the TTI one's, even if not as cheap as they where a couple of months ago.
