Hey Injected1, you may want to add this one to your list if you go the replacement route.

Raptor 4L60E

The downside is that it probably costs $200-$300 more than the FLP. The upside is that it INCLUDES a 2800 rpm TC! Higher stall is available for extra $$. If you don't already have a higher stall upgrade, that's good bang for the buck.