JB,
There are plenty of people racing various makes and appear to be doing quite
well.
Dean Lampe just did the Run'n'Gun in his heavily modified RCR
Ross Nicol races his highly modified RF
Ron McCall races his RCR
I can't tell you the number of GTDs that do various sprints, hillclimbs
and such in the UK - but a brief run down includes Robin Batt, Martin
Weigold, Paul Thompson, and more. Bob Usher-Sparks used to race
a Chevy powered GTD as well.
I have seen ERAs in action, and Buzz Clarke attempted the One Lap of America
in his CAV.
And then there's Tim K's Tornado and of course Bud Jones's GTD racing out
here in California.
You haven't really opened a can of worms, it's just that there is no right answer.
I'll stand by what I said, all of the current offerings will make solid platforms to
work with, but will need large doses of money and development to seriously
compete in head to head racing. Frank Catt has been doing this for years with
GTDs, and a lot of what he has learned has made it's way to Mick Solis' Southern GTs
(or maybe it's the other way around
) CAV have a number of options to make
their car more track friendly, and RCR has done a fantastic job on Dean Lampe's
car.
Ian