Re the performance aspect. No direct answer to your question since my Group 4 replica isn't built yet but I've had pretty much every variation of Lotus Elise, Exige and Esprit along with more than-a-few exotic Italian, German and even British 2 seater sports cars. One of my toy cars at the moment is a 600bhp Ultima GTR.

Anything light weight with decent level of power is going to be fast so I'm expecting my Stratos to be fairly rapid and handle fairly well. I had a passenger ride with Craig from LB and that put me in mind of being in an Exige test drive (apart from the bit we were airborne, the Lotus guy never got us off the ground)