i went with Advance Adapters # 23-1501-60 flex lines.
My trans is still being rebuilt. This is stupid----i should have had the original TH-350 rebuilt when i first took it out----just for situations like this. i could have one sitting on the shelf, ready to be plopped in at any time. i never traded it in for core. (Not sure what you 4WD guys have, but 2WD trucks have the 9" tailshaft and these aren't as common)
Instead, i have lived an intolerable life for past month----just like jr.high and most of highschool----NO CAR. SAME RELUCTANT SIGH from parents when i asked to bum their car so many years later.....