I built one a while back, a Ferrari 642 and despite the lack of some details like seperate rear shocks, they are moulded into the gearbox top, I found it to go together really nicely. With the addition of some carbon decals and seat belts etc these can be made to look really nice. I'd definitely build another one. The only problem is they look really small next to a Tamiya because of the scale difference but what the heck, I build 1:43 too!!!
Heres some pics for your reference to show you what I did with mine.....
