help me identify these 4 speeds!

Hey guys, i figured it all out...the first one is a heavy duty 23 spline as i measured the input bearing retainer and it is 4.8 just like the 18 spline hemi's and 23 spline hd's...i cracked open the case and its mint inside! even though it is a b/e body tranny im going to fab a bracket to use it in the a body...the other one is an overdrive as i checked the ratios on it and measured the input bearing diameter which came in at 5.125 meaning its a 1975 and later OD...to top it off its a steel case OD as well....my dad scored these both for free, so they turned out to be pretty neat deals! Thanks for the help guys, reason i was so adamant was because i had the trannies out in the garage and wanted to figure them out before i put them back, but the bearing retainer did it for me...thanks guys