Question about 1/4 mile categories to have

Ok so I'm going to hold a quarter mile ladder on gt5 with a track I created and am currently sharing to many. I will probably have 8 catagories at the maximum and these are the ones I will most likely have for sure, but please give Constructive criticisim;

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•Pro Street (any street car with no holds)
•Pro Race (any racecar with no holds)
•Supercar (150k - 750k & 400-600 hp
production road car)

•Truck/Suv
•79 & under American Muscle
•79 & under Continental Muscle
•(Special car) evo vs sti?

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the rest down bellow are just some random things for you guys to pick through and decide if something looks good or not.
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49 under class stock/pro
50-59 class stock/pro
60-69 class stock/pro
70-79 class stock/pro
50-79 class stock/pro
80-89 class stock/pro
60-79 class Stock/pro street/race
Special car class
Fr
Rr/Mr
4wd
Pro street*
Stock street
Stock race
Pro race
Unlimited*(exclude x1)
X1 class
Lightweight pro street
Lightweight stock street
Heavyweight pro street
Heavyweight stock street
Pro stock truck
Civic pro stock (street)
Veyron Pro stock
100 hp class
300hp class
350hp class
400hp class
500hp class
777hp class
Evo/STi class pro (street)
Evo/Sti class race
Supra pro *(street)
Supra race