42RH / A-500 in a Duster with pictures.

Remember if you have to move the inside trans crossmember bolt on the driver's side to provide clearance for the trans case, you will have to modify the Holley hoop too. That's not to say that this isn't a good way to go, just not plug and play, just like the USCT crossmember.
I bought the USCT cross member and the white widow hoop kit. On the next nice day I'm going to grind the hoop lose from the brackets and fit it to the car and spread it to the needed amount and fit it over my A-500 trans which it does not clear now, then reweld them in place.

It's not a plug and play but it sure seems like it could be with the right attention.