Seems like we talk about this every year. I think the current classes in NHRDA work pretty well. The 11.90 index class is fun, I wanted to see it set closer to 11.50 for selfish reasons, but it's fine where it is and provides heads up racing and driver strategy as well. It was added for those trucks who didn't want to run brackets, were quicker than 12.0 but didn't feel they could compete in SS.
I think the PS and SS trucks will separate more in time, the weight and tire and suspension differences will almost dictate that they do. The only rule I'd like to see added to the SS rules is the trucks must be driven under their own power to the starting line and back to the pits, (unless broken of course).
Current NHRDA record for PS is 9.12 @ 154.6, SS is 9.94 @ 140.6. The PS record will be in the 8's before long and the SS record will probably go to at least 9.6 if not 9.5. and the mid 140 range. Max'd Out has pretty much had it's way with this class for the last 3 years, but there are a number of very quick SS trucks around this year and I'd bet the record will be broken in Topeka.
No getting around it these quicker trucks break often. I also hate to see them break, but as Rob said he has won a lot of PS and SS races with his tow truck due to the quicker trucks going down. For that reason I think the mid 10's trucks have a great chance winning a lot of the SS events. I turned my truck down to run the 11.90 class because I was tired of breaking it running it all out. So far I'm still breaking it:bang, just not as bad.
![Big grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
There are not enough of faster trucks to support adding another class at this time IMO.