Is it based on an F355 GTS, like I think it is? Or is it an F355 F1 or an F355 Berlinetta?<!-- Signature -->
Re: What F355 is this based on? I'd be guessing that it is based on the GTS, as it has the targa top, which to my knowledge was not available on the F1, and the Berlinetta was a coupe only, which is what the name means.<!-- Signature -->
Re: What F355 is this based on? This one looks like a GTS, but the question is whether or not you could do all this to a spider, or coupe?<!-- Signature -->
Well i've seen both cars and I would have to say it's definitely more like the 1996 Ferrari F355 Spider.
If it's just a reprogrammed ECU, then it could be any model of F355. Manufacturers have been known to update and adjust ECU's year-to-year, though, which could foil Hamann's work. Although price is not given, I'm sure it's a useful improvement for not a lot of money.