The following is a link to a thread on the Viper Club of America's SRT forum:
ACR in Top Gear magazine - Viper Club of America Discussion Forums
This month's Top Gear Magazine has an article on the '08 Viper ACR. The openning message has a scan of the magazine cover. But if you scroll over to the second page the entire article has been scanned in.
It appears the author was thoroughly surprised by the ACR's performance. I got the impression he had some negative preconceived notions about the Viper. However, he could not deny the ACR's on-track prowess. Unfortunately, they do provide any lap times. Pretty good read except he mentions the ZR-1 multiple times.