G'day Anji, good thanks mate. Only the A65 that I blew up a month ago. Found half a little end and bush in the sump (see pic). Haven't worked up the courage to look further yet.
The "collar" (thrust face) of the timing side bush is needed to be able to set the crank end float. Without it the crank would flop around like a c@ck in a sock
. Shims are used behind the inner of the drive side bearing, (between the crank web and the inner when pushed on the shaft). Cam end float would be nil once the cork on the pinion is squashed a little by the breather valve in the inner timing cover.
Cheers
ps Use the search to find lots of info about crank end float.