Do you think NHRA really cares what you think, about that? It's all about money.
I had a pair of 4 year old race belts in my car, If tech gave me problems about them, I would hand them the OEM 1966 belts, and ask, which they would prefer in the car. Usually the race belts stayed in.
PS: If I am not mistaken, the 2 year replacement NHRA rule only applies if your car requires a roll bar. Then you are required a harness, and window net, also. This was implimented several years ago.
