I think "A41" is a reference to SST's complete kit. Unlike a T56 Magnum or TKX, they don't list the automatic nor the bellhousing they sell to bolt the GM trans to a Mopar separately.
The 4L60E has a removable bellhousing unlike the 200R4 which has to have it cut off and then an aftermarket bell bolted to an adapter plate using the pump bolts, I think.
Can you buy an aftermarket bellhousing to bolt a 4L60/65 to a Mopar anywhere else? Not an adapter to bolt the GM bell to a Mopar, but a bellhousing that will connect the 2?