The 1969 911T engine didn't have bearings in the case for the layshaft. However, the 1970 911T (2.2) did.
Some upgrades were done to the 2.0 engine in the 914/6. For example, in 71, they added piston squirters.
Did the 2.0 case in 1970/71 get the bearings for the layshaft, or does the shaft run in the case without bearings? Bruce Anderson's book doesn't specifically address this.
-Lawrence