T5 Borg Warner into an A body???

I know this might turn a lot of stomachs, but I am thinking of putting a T5 borg warner from a 1991 Mustang Gt into my 1970 Duster project. There are a few different manufacturers that make a LA bellhousing to a T5 borg warner trans. I am on a tight budget and cant really afford the Keisler kits.
The transmisssion I am thinking of using has a 310 ft.lb. torque rating which should be sufficient for the 340 I am building.
I know it would be much easier to just spend the money for the kit and be done with it but I never seem to do anything the easy way :???:
If anyone can share their experieces or comments on my project, I would really appreciate it. Thanks
retsud043