ur a star mate. u know anyone whos bought these and had a good experience?
I have a full set for a 156 Saloon from the company in the link above, AutoDS, in the loft that I haven't decided if I'll fit yet (ithe full set's only been up there for the last two years...).
The quality is pretty good, I only tried them for initial fit but they were pretty good, the gel coat is quite thick and the surface relatively smooth, the fit is reasonably good and the work they did on the corners of the front and rear bumpers, where they've shaved the flared section from the GTA and re-contoured the bumper to a narrower Twin Spark wing is good too, the panel gaps were nice and even when I tried them. The main thing to remember is that they're aftermarket copies of original parts and although the finish of the parts is pretty good they require a fair amount of fettling and preparation to get them looking their best on the car; when I say the finish is pretty good I'm comparing them to the fibreglass panels available for MGB's & Classic Mini's etc that come with a disclaimer that they're intended for competition use only as the fit is so poor.
The only downside I found was in some of the detail, the side skirts, which I can't really complain about as they were effectively free, are open underneath and the way they've been altered to the narrow body of a basic 156 was pretty rough; the flared sections appear to have just been cut out of the GTA skirt.
The rear bumper has no recess for the reflectors and the centre of the diffuser is very thin and flimsy; I picked up the centre diffuser from a Zender rear bumper lip to mould into mine if I ever get around to it as it's much more substantial.
The front bumper is overall good, as mentioned above the work around the wing area is nice and smooth and the gel coat nice and thick, the only issue I saw with the front bumper was the small number plate plinth moulded into the bumper itself, this didn't appear to be a huge issue though as IIRC the UK plinth is big enough to fit over it.
Overall the quality is good, the skirts comment above is a little harsh as the quality of the part itself was good and the way they fit is almost exactly as with other aftermarket skirts, and I don't like the self tapper fitment there either; I think I brought a set of GTA skirts as it'd be easier to fit them than make the thin copies work well. The only other downsides I can think of is the regular downside to aftermarket parts; there are no mounts in the bumper for driving lights, the above mentioned missing rear bumper reflector recesses and the diffuser etc.
Depending on what they sell for now, the exchange rate was a lot more favourable when I ordered mine, they were worth the cost if you really wanted them but you also have to add the labour costs if you can't do the work yourself and the cost of painting and fitting, again assuming you can't do it yourself. It could get very expensive very quickly if you had to pay labour charges on top of parts and consumables.