There is a wealth of knowlege out there on the web

Stage 1 V8 Forum - not a lot these guys can't help with!

Stage 1 Register - Annette knows a lot about these!

The LRO Forum (Series III) - lots of Series expertise here

The Land Rover Network Forum (Series) - lots of Series expertise here and better than LRO

The Land Rover Forum (Series) - it's there but not a winner

LRx4 - lots of useful help and spares here