They have used nitro for more than 50 years- it's a lot more than that. Returning to 1320 would be great, but I think they should do it with another class of cars, not by restricting anyone/anything. The way a 10K+ HP car launches is incredible, although that's what was amazing in the mid-'80s when I last went to a drag strip and IIRC, the winning top fuel time on that day was ~5:12.