Does any one know what is the widest front wheel without roll the fender and clear spoon caliper.
I know ce28sl 9j 45 clear caliper and no need to roll the fender if the ride height is enough.
Does anyone know if ce28sl 9j 63 clear the caliper and will it requires the steering rack in the full lock.
Does anyone know if Regamster 9J 45 clear the Spoon caliper, and does it need to roll the fender.

 

17x9 et45 will most definitely need fender work unless you're at stock height and want to have ridiculous poke fitment...
For no fender work you'll have to stick with 17x9 et63. Here's a thread that already answers your question: Wheel list that fits over spoon calipers... - S2KI Honda S2000 Forums
using the search function is always a great place to start.

 

which tire size? If running a 255 square setup (typical on these cars) then even with a 17X9 + 63 you need to roll the front fenders. I have even seen slight contact in a severe situation with that setup. This is assuming the car is lowered. At stock height you can get away with a bit more in this regard.