The V8s have their faults, many owners get all hot and bothered when Brian points them out, personally I don't give a toss, what Brian says is right, it is underdeveloped!
It is a lazy lump of an engine that will potter around all day but is also capable of leaving a few hundred miles of tread on the road when you have a daft turn.
Cabin heaters can have a mind of their own, watch the rear subframes for corrosion, water hose from inlet manifold to cabin heater is prone to going pop (uprated hose available from 260 OC), where the hose attaches to the plastic inlet manifold can crumble. Engine parts, best source is
Rock Auto in the States. Because of the cobbled together electrics they can be "funny" with a T4, there's a "Gateway" ECU to allow the Ford engine to speak to the MGR systems!
28 mpg (not much less than a V6) is perfectly obtainable on a long run. They're just an impractical fun car, I love mine.