Sm420 removal help

[42_NATO]

Hey guys im working on pulling the tranny from my 65 c20 to replace the clutch. And so far i have pulled the drive shaft and working on the gear box. But im having trouble, on the left side of the tranny i noticed it only had one of 2 bolt. And on the right ride ive located the top bolt but cant seem to find another. Isnt there a total of 4 bolts that need to be removed. If any one can help with aome tips on how to remove the gear box from the bell housing that would be great. Ive looked all over google and cant find anything to help me with this specific trannt2