The 1600 HC motor in the early Ghias had a decent spec for the day, with it's twin-choke Weber and tubular exhaust (I think). ADR27A regs killed it though, dropping the power down to 46kW, hence Ford eventually putting the Pinto in. If your are starting with the "good" 1.6 motor, and camming it etc, it should be a nice little runner indeed.