overall i like the CWest widebody kit and CF bonnet on your S15. I can see you love your car and kudos for efforts.
Just that in terms of my personal preference, if you use a GT style kit like CWest, the rest of your car should have a cohesive "time attack" kind of styling.
I think bigger brakes, 17/18 inch forged rims plus a GT wing will make the looks more coherent... Something along the line of Sunline Racing S15 (which also uses a CWest GT kit in carbonfibre) as below:
Though I think the decals will be a bit too much for a street car
Just my opinion. Pls dun be offended, I think your car looks good right now but not cohesive to me yet.