Hi
I don't want to rain on your parade, but as gilltech says the value of the Golf is a LONG way from the value of Z.
The golf would be worh $8k tops, if it was absolutely immaculate (dealer trade value about $5k)
Fir a good registered Z
A 2 seater Z, $30k upwards
A 2+2 $15k upwards
So a 2+2 that needs work would apprar to fit your budget.
Then there is the cost of restoring, as the sayng goes "think of a number and double it"
Maybe place an ad online for the Golf at the price you are after and see how much interest you get, then start the hunt for Z.
Cheers
PB