I did sell the 100HP seats to that member on here. I have fitted the Abarth ones. Shame I can't make use of the airbags as the car is not ready to plug into them software-wise, even if I ran wires to the correct place.
Also fitted the wheels, which are actually Superturismo GTs, I have grey Superleggeras on my Uno and got confused!
Apart form the slightly undesirable rise in ride height, they look good I think. They have a bit too much offset for the perfect look and are very close to the anti-roll bar droplink threads coming through the struts. They will be perfect when I fit the slightly wider track front and rear. Also, the 500 struts have the droplink mounting angled away from the wheel to facilitate a wider fitment anyway.
Done some more comparisons of front suspension and am now as convinced as I can be that it will all fit. The 500 wishbones do indeed give the inch or so extra track at the front. The 500 driveshaft is an inch longer, but has the same parts either end of it. I was unable to spot the difference between the two uprights though. I have to assume that there is the smallest of differences to the two strut mounting holes to compensate for the ever so slightly increased angle of the strut due to the track increase, but whatever I measured and looked at, I couldn't see this difference. The considerably more substantial wishbones will just bolt on and the anti-roll bar has the same distance between mountings, so presume it will too. I would therefore guess the difference between the 500 and panda front subframe must only be the two flat rounded projections coming from the front as indicated in
ePer. The anti-roll bar is quite a lot thicker on the 100HP. Obviously compensating for much softer springs than the Abarth 500, but I wouldn't say they were soft in the 100HP really.
Can confirm that Abarth 500/GP T-Jet front brakes fit in a standard 100HP wheel.
Comparing photos of the rear suspension of an Abarth 500 and 100HP, there is a pretty big difference in the compressed coil height when stood normally. Little worried that using the standard Abarth springs all round will result in the skirting on the floor, but we will see!