I agree with PSI Racing. In '92 I had my latest BMT '92 Austin stole at the start of the year. I switched back and ran my '89 BMT and still won the championship in a dominant way against all the newest cars that were available.
Having the newest car doesnt mean anything other than more money spent that would be better spent on something else or a show of who has the deepest pocket.
I personally laugh at the guy with the big wallet who splashes out on the latest set of screws to take an ounce of weight off the car especially when they are barely making the A-Main for the effort.