My ears were burning so although I replied to your PM I thought I’d post here too so I can get massacred by the assembled loons
I think to say I recommissioned a low mileage car does a disservice to the car I bought. There were a few things that needed sorting, a couple of 3200 foibles; pedal pot, clutch pedal bush, shock actuator. There was also a some electrical stuff and a leak that I think people put up with on low mileage cars for some weird reason, look at all the garage queens that people keep on chargers. None of which cost me much money so for purchase price plus maybe £1000 I had one of the best 3200. The low mileage meant the underside of my car was like new and it drove superbly.
I’d spend the most you can afford and have low mileage and buy from a reputable source or have a PPi. Richard Grace is your man to speak to in the first instance.
https://www.richardgracecars.co.uk/
Why I don’t have it anymore: I sold it partly because it annoyed me once too often but if I’d loved it I’d have kept it and I didn’t. It took me another “mistake” of a car, an e93 M3, to realise why. All this guff in the press about manuals is bollock. Buy an auto or a CC. With hindsight if mine had been an auto I’d still have it.
Which one? If it’s a 3200, have an expensive, low mile, OBD2, auto.
As to comparison with 4200 and GranT. I’ve never owned either so can’t comment on that side of things. All 3 look special, the GranT feels a bit ordinary inside perhaps because it’s more modern. 4200/GT sound best. 3200 feels twice a fast as the other two but isn’t. The 3200 feels far more like an exclusive coachbuilt car with the benefits and foibles that brings.
Which one, part 2? I’m not sure what you want it for or your budget but I’d go for an auto 4.7 GranTurismo. Well actually I’d go for a GC but you didn’t mention that.