There is the "Abbingdon Edition" not a V8, but a 2.5 liter in-line 4 cylinder engine produces 302 bhp and coupled to a 6 speed manual gearbox 0 – 60 mph in just 3.8 seconds. I an not sure a v8 would add much apart from weight and a different sound, but as they are 1960-70 cars and tax exempt they don't have to have a cat to dull the noise.