I went with TTI mounts for my Hellcat swap. When I did mine, Holley did not have theirs yet. The Holleys move the engine i believe about 2 inches forward, which would eliminate the need for a low profile coolant manifold for the supercharger in the rear.
2" move forward, doesn't that cause other problems?
Driveshaft too short,
Transmission has to move with it, shifter linkage?
I bought the Holley mounts, but had to go with TTI mounts when I figured out the TTI shortie headers don't work with the Holley mounts. I already had a complete TTI system in the car, didn't want to have to redo the back.
Removed 340, dropping in 3G and the TTI shorties bolt right up to my existing exhaust.
Don't think my 518 would align up if moved 2" forward.
I'm about 1 month away of firing it up, biggest pain is the wiring
