OK had a quick look and for some reason i do habe some 80yz b stuff, i can see a piston and rings at least, and if i get a chance minght be some more in there, but they will be internal mech stuff for the motor etc, but if you give me some part numbers i can check closer other wise ill just troll the single prefix, even thought im guessing those 80's had sub for 10 years or more :O)