thank you everyone for you support.
answers to questions
the car came with the splitter, i used 2.5 mm rod. it was what i had laying around collecting dust so i thought that i would use it up for this. and last but not least the wheels are from an ebay seller. 13 bucks so not bad for evil bay. note the the front tires came with them rims. the rear set are the same profile so i made a set of slicks for the rear