Looks like a late small block, at least compared to the Golf which as far as I know is the same definition.

Early (up to '75) cars has the remote air filter.

Early cars also came with no servo (option on small block, standard on big block), no low brake fluid warning switch, separate coolant ...

Nice car, was tempted by it myself. Nice to see it being looked after. Where did you get the B-pillar vinyl from?