[elhigh]

My bad, that must be in the "Planned Mods" heading.

Also apologies, didn't realize the splash photo for the YT vid was a guy giving the one-finger salute to his old tranny. I changed it something less offensive.

If Ultarc is concerned about the engine turning a 2.73 in top gear, that might be your barometer. His car weighs a lot less than a P71 and I would imagine has much, much better aero. Combine that with the fact his 3.7 produces more power than the Modular and taller gears may be off the table.

[edit again]
Well, digging around on crownvic.net I see 2.73 was a stock ratio behind the 4r70w tranny.

Playing in the sandbox of fantasy, a Tremec 6060 like from the Shelby 500 (crack your wallet WIIIIIDE) with the .5 OD, turning a 3.55 final, would give your Panther a tremendous leap off the line with the shorter final and deeper first gear. It would still be turning slower in top gear than your current setup and even about 10% slower than the 4r70W with the 2.73 final ratio.