Evening all, I’ve had this sitting in a corner of the garage for a few years now but finally popped it on the engine stand now the ABF is in my MK2. Part number on the block: 026103021B Pistons: 82.485 It’s got a TSR Number written on it but also a PB number. I got it with a Schrick 01401 76000 cam and a head with G M Sport stamped on it and T Betts stamped below that (also date stamped 03/98). Head Part Number: 026 103 373F So.......where can I find out more about these parts? Worth rebuilding? Is this a ‘set’ or just a random collection of parts that may not work together? Thanks in advance! Pete.