I order the stock replacement 727 converter for a mid 70's dodge pick up with 4wd and a 318 It is about $75 from any wholesale trans parts company and I have found it to the the loosest stocker out there and just perfect for hot cheap street use--I have bracket raced them with 440/ big hyd cam/ small slicks cheap fun!
JW--hard to beat, ATI probably some of the very best, TA smart guys perfect workmanship and they know Mopars but..
Everyone has gone to the 9 1/2 because of core issues--it offers the converter builders lots of choices in stock form by way of many factory combos they can mix and match for effect
I found the J to be the best magic unit ever in a footbrake car but was too loose in my 69 Super B with 451 SR head 4.10 gear car for much street use--
