V10 Dodge Dart Demon or Sport

Two things:

If the 488ci Viper V-10 is supposed to be a 5.9 block with two extra cylinders and a one-belt wacky serpentine pulley set-up...

1. It's pretty clear that moving the firewall back is necessary (weight distribution would be horrible otherwise)

2. Wouldn't a 727/904 bolt up fine? I've only seen 5 and 6 speeds behind them in B & E Bodies when the V-10 conversion has been done