congratulations on the VW (Y)
you should be able to get the 1/4 glass from a kabaria, but make sure it is a post 1968 window as the earlier stuff will either not suit your car or not fit.
Ignition switches are becoming harder and harder to come by, specially one that works. best bet is to get in touch with a good kabaria or your local mechanic and have them source you one.
do you have pics of the rear spoiler? where was it mounted?
your car looks like a 1974 economy model, which is quite light and the 1200 will be ok in that car. however i was reffering to running a 1200 in a deluxe or a superbeetle which weigh ALOT more. I had a 1200 in my 68 speedster which weighed about the same as a "thing" and it was REAAAALY slow.
let me know how we can be of help and we'll do what we can and also share some more pics/info on your car.
thanks for the mention, but i wish i knew as much as romano, nasir & asadishaque, those guys are die hard VW nuts, i only specialize in superbeetles and things.