I believe US Shift is the only company working toward the standalone system needed to be able to control it. Someone hypothesized it may be slightly easier in the EB cars but the biggest hurdles will still be controlling it and availability. I’ve only found one on eBay from a Mustang and it’s 3700 dollars.
Its all in how the transmission strategy is tuned. Ford has already updated their strategy couple of times because folks were having issues. You don't have to get a zl1 to get a 10speed. The 19 ss now has the 10speed auto.
US shift is still working on their controller for the swap. It’s too bad Ford wouldn’t make a swap kit available, they probably want people to buy the new cars instead of swap.
I think that's yet to be seen. Both transmissions bolted to identical GTs, which one will get down the 1/4 quickest? My money goes to the A10, despite the Tremec's shift speed. The A10 is a proven transmission. Not sure the Tremec' been in service long enough to say it's bulletproof.