chevy_stang88

i just took my car to the track last week it went 12.9 @113 it puts down 407 whp and it is m6 i want to put a set of 373 in the rear but i have never done this before could someone help me out or send me a link i would like to go 12.0 or even 11.9xx O yeah n that time was with a 2.3 60ft on street tires someone told me if i put the 373s in i will have a better 60ft time i dont know if this is true so here im just trying to get some answers here
thanks