Hi Hardtailer, welcome here, seen you on other S14 forums many times.
Heard about it being a 318i or something before its conversion. Seems well done as far as you can see from these pics. The fact that the seller refuses to respond was a bit of a sign to me already.
thanks for the welcome, jeroen.
The pictures of that cabrio aren't there anymore but IIRC you could see the battery sit in the engine bay so it must have been a 318i