[Bill Baer]

I’m not sure on the altered but the dragster may require a larger and thicker shoulder hoop and a thicker and or larger cage also having a chrome plated cage can be limiting you can look up the specs on the SFI website
The 7.50 cert can be for 4 years the faster cert is annually required.
If you want to go faster than 7,50 keep that in mind when shopping for a car, changing the shoulder hoop is a major PIA.