IMO -- that's a very strong asking price -- I would expect concours at that price for a 1.7. It is very nice looking though, the paint and chrome bumpers look to be in good shape. A few things off the top of my head:
- Monza exhaust...not original
- hood badge...not original and in a weird spot
- Missing the front bumperettes
- No center console or alloy wheels, which I think means this was a no-options car, so doesn't have sway bars.
Assuming the engine is solid...
If you did get into this car at this price or something similar, I would want to confirm there is (close to) no rust anywhere by removing the rockers, closely inspecting the trunks, battery tray area, etc. I'd also want to do a very extensive inspection of the suspension -- how are the ball joints, a arm bushings, shocks, (not suspension, but) tie rods -- and I'd want to shift through every gear to assess health of the synchros.
Freshening the synchros and suspension can eat up $5k easily, then you've got a $20k car.
looks like a beaut though. I am pretty sure if you can afford the $$ and take the leap you won't regret it.