I have no qualms about safety equipment requirements for the various tech speeds. Thats just sanity checking in. Nor do I with tech inspections to ensure everything is in good order.
I'll be honest, I'm always on the fence about putting a cage in the GTA. The car is fast enough that on track its a life saver. Its also 30 years old and so its its crash test standards are woefully inadequate compared to modern crash test standards.
The GTA does have a DS safety loop, because I like my pole vaulting events limited to the olympics, I don't want to participate with my car.
However, if I move to 4.10 gearing like I want to with it, I'm also upgrading to a CF Driveshaft. Because at that point top speed will be with 6th gear, and at that point the overdrive will spin drive-shaft at about 10,800rpm. So I'd need a driveshaft rated for those sorts of RPM.