65 Valiant Signet convertible project; where to start?

Bag and tag every little nut/bolt/washer you remove from the car and note where it came from. Lots of pictures will help you remember the little things.

Motor - What motor? If a V8 and the motor mounts are for a later year, it will sit crooked (ask me how I know this!). If a 273/318 the correct early A mounts should solve the problem. If a 340/360, Schmacker (sp?) has the conversion mounts for an early A or modify the early A ones. If a later engine, did the PO use the correct early A V8 oil pan? Yes, there is a difference!

Electrical problems - hard to say without further explanation.

On the top, make sure it's for a Valiant as the Dart tops are not interchangeable.

Good luck with the Signet!