I'd be more than happy to tell you whatever you want to know about the replica Stratos. My experience is limited to the Hawk version but I have lots of friends that own the Corse variety. For me the decision to get a replica came down to the realization that while I could afford to get a real Stratos (just), I couldn't afford to have any fun (or accidents) in it.
In short the Hawk is a near identical replica while the Corse is outwardly identical but has an updated chassis design and suspension geometry. A well built Hawk fitted with the proper engine and 5 bolt wheels is very hard to tell from an original car. You can use a lot of the same parts the real cars did - gauges, steering wheel & column, fuse blocks, heater levers, emergency brake, seats, etc. I've been told that even the suspension bits are interchangable if you use the right bushings. The bigest difference between the cars is that the Hawk has an all fiberglass shell over a steel space frame where the original car had a steel shell (with an integral roll cage). Both cars use fiberglass for the nose tail and doors. If you ever want to know if a Stratos is real or not just check to see if the roof is fiberglass. There are about 6 replicas in the USA that I know of. I'm not sure how many originals - I've heard of at least 5 but there might be more.
John B.