A plus bearings have a centre locating indent whereas the earlier blocks had the locating area on the side- These are A plus 10 thou oversize.
Fitted from about 1984 on
VP suffix bearings are made by Mahle with lead indium content for road or race
VC suffix big ends are Mahle top race bearings
VM suffix main bearings are Mahle top race bearings-
new stock will be Kings as ACL are out of business.