Yup just add 8 to the beginning and 0 at the end ... though if you have the vauxhall numbers they go by that as well. All the 8 and 0 mean is identifying type of part. The 0 means component I believe, 3 means assembly.
I have to have the part numbers as the Mk.I doesn't appear on the Dealership EPC system. They have to crack out dusty old tomes and find the number amoungst the ink drawings, then punch that number in to find it.