Gary,
With all due respect to Brian's opinions, there is much heated debate regarding the sources of Spyders on www.spyderclub.com. Every Spyder source has their loyalists and their detractors.
I built a kit, but it was over 12 years ago, so my answers would not help you out. I found the experience both very frustrating and very enjoyable. You might also want to look at Thunder Ranch as a kit supplier.
Post over at the club and you will receive replies from people who actually built their cars.
Regards,
Mike