Who's running the I6 Stall Converter? Do they have the TBSS stock towing capacity? What's the stall speed? How do they compare to Circle D 278 which has a max towing capictiy of 4k & the Yank PTB3200? The truck is a D/D that will prob see towing once a year (my F-Body). Where can I find one besides GM Parts Direct PN#24228709? I apologize for having so many questions. Everyone inputs are welcome.