Borghi is a great guy and really very helpful and professional. I can thoroughly recommend him.
He fitted the Suplex kit to my car and if you are in the area you are quite welcome to take mine for a drive. I have heard that Borghi himself is not convinced as to the benefits of the Suplex but he did not have the chance to drive it out of the city. Personally I am very sure of its benefits. The car rides the bumps better, is much flatter in cornering, and the steering is lighter.
I am sure you will enjoy the Plus 4 SS enormously. When I ordered my car I really wanted the SS but the factory would not do a bespoke version.