the reason as to why there were so few 454 in attendance is that there aren't as many on the road as the 450/451. most 454s are usually bought by people who need a car who need 'a car' and just that, and don't know the value of owning a unique vehicle, which is why you can pick one up for a couple hundred quid, cos people see it as an ordinary car.
and the ones who understand the value of the 454, are usually family people who have prior commitments, or they live to far to attend southern meets on a regular basis.