My apologies for not replying sooner. I've been away a few days, so I hope you'll forgive me. May I submit an extract from my Owner's Manual (all in mm):
S3 SV
2225 2305 Wheelbase
1336 1446 Front Track
1336 1446 Rear Track
3100 3530 Length
1575 1685 Width
1115 1140 Height
I've taken a Supersport for the S3 dimensions. May I also refer you to some pictures of second hand 7s for sale from Caterham themselves. The first is an Academy (S3 chassis), the second a Roadsport with an SV chassis (S3 is just an abbreviation of Series 3, whilst SV an abbreviation of Series Five, though everyone refers to it as an 'Ess Vee', and sometimes, jokingly, as a 'Sumo Version' as its larger and about 25 kilos heavier). In both instances click on the images taken directly from the rear of the car, and you can appreciate the difference:
http://uk.caterhamcars.com/pre-owned/2065-academy
http://uk.caterhamcars.com/pre-owned/2030-roadsport-140-sv
Its a little harder to tell from the front of the car, though if you're used to it you can ping the difference in the radiator opening. There is also a difference in the distance from the outside of the bonnet louvres to the start of the curve of the bonnet, particularly at the rear of the bonnet.
Having said all this, may i compliment you on your work, as it is absolutely first class. I wouldn't have a clue how to begin. I do hope you'll do a wide range of Caterhams, as there is a discernable difference in the performance, but they're all wonderful to drive. The only other car which felt remotely similar was a single seat Formula Ford I drove decades ago. The controls of a normal tin-top car feels like stirring a pan of porridge by comparison.
Apologies, almost missed your question about my own. Its a 10 year old Roadsport 140 SV. At the time of building the 140 referred to its bhp, though a recent dyno test showed it to be 156 bhp (116.3 kW) @ 6,915 rpm. Peak Torque for mine would have been around 125 lbs/ft at the time of building, though mine registered 127.5 lbs/ft @ 5,715 rpm. As she was built as a Roadsport, I suspect peak torque was kept at lower revs to keep her more tractable in traffic, rather than being built primarily for track use.
I hope this is of some use and I do hope you don't think for one moment that I'm trying to disparage your brilliant work.