Hey guys.. I think I may have been mistaken about the no engine braking in low gear....I thought about it and it did work normally. The car would normally stay in 3rd almost until it would stop so the engine would seem to stay at idle but when it was held in low gear it would provide braking so it was working as advertised....... I must say that I am very concerned about running this trans behind this 390. My gut tells me that I will have the same failure again....... I'm leaning in the 727 direction TBF