I saw a post on F.book a while back from the truck puller guys that were going to have SFI cases for the torqueflites built, said it was DOA due to the company they were going to get the cases from had been contacting many transmission companies also trying to get someone to bite, so they dropped it.

A Lot of us would love to get an SFI case, I have a lot of good parts that would really like a stronger case around them .... we have a few cars with up to 1400 hp behind them, with no real breakage,
but yes... there needs to be a stronger SFI case made.