hotmelt,
As to your 170 victa twin you will be able to replace bearings rings carby parts air filters and spark plugs but as to reboring I have not done any for some years.
If you do a search on the board by typing in victa twin you will see members that have been doing them up and PM them. I am sure that they will be able to help you.
I will try to find out some more information for you this comming week as I know a couple of people that still restore the victa's.
