Low mileage Assetto Corsa, looks good, belts just done. I'd give it a look if I was in the market, got to be worth £25k surely, so asking price, minus negotiating room, maybe not too optimistic.
I've never bought a car that way. I know what I like, investigate, research, then just buy it. If I don't like it then it gets sold. I'd never buy on what the majority say, we'd all be driving something German and in white! ;)
Look for my thread on here, plenty of pics, but on a 3200, which I assume would be similar to the 4200. Good luck.
https://www.sportsmaserati.com/index.php?threads/assetto-corsa-refurbishment.36897/page-3
If it's similar to mine, then they run under protective covers/heat shields. Access from below. The originals will be plastic coated steel, so difficult to flare Insitu. Buy decent split ring spanners as access at the abs pump is tight.
I used to like those too, rummage see what looked and sounded good, and if it would fit. They have gone the way of most shops, nobody goes as they have gone online, or the powers at be have pedestrianised the high Street! So again nobody goes.