is the input flange bolt pattern the same as the output flanges....?

this is an 80's t-case I belive...  (any way to identify year of a t-case?)

thanks,
Mick

Ive delt with alot of samurai transfercase's and most have had the same bolt patterns on all 3 flanges there were 2 bolt paterns/flange size's the slmall uses bolts w/a 12 mmwrench size & the large w/a 14 mm I have used small drive shaft flange w/large t/c flange by drilling new holes but there isnt really enuff meat on the small flange to do it the other way around I think pre 88.5is small flange & post 88.5 is large