Sounds like a really cool car and I like being as true as possible to nostalgia stuff. I believe the fastest I have heard of was a member here that ran high 8's on SS springs (Red '64 B body?). I don't believe they lasted a long time at that power level and might not have been the most consistent, but he made passes and a good number of them. The car tended to wheelstand so while I don't know if the 60 foot was great for that ET, it certainly got moving in a hurry.