Make sure that it is the rear main seal that's leaking. I had a serious leak from the front of the transmission on my 47 CJ2A.
It's different oil but basically leaks from the bellhousing in the same location as the rear main. They could both be leaking.
Fred


1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine