A couple of things you need to look at first and that you should take in consideration! First off you're a vert and therefore alot heavier than hardtops! I think us vert weigh around 36xx-38xx lbs! So we start out with a disadvantage! Second! with your current mods you more than enough to already be in the high 13's! Also you don't specify wether your car is a 5-speed or not! If youre a 5-speed I think you can't drive and need some practice! If youre an auto you got the wrong gears and should have gone with some 4.10's! Third, I don't know wether you are on sticky tires or not, if not I suggest you get yourself a set of Nitto Dr's or BF's Dr's, any of the two will do just fine! On a side note, 17's tires will give you a better E.T. than 18' tires so I would have gone with some 17's but I think you went with 18's for the look right? Anywho, with some practice and a good launch you'll be in the 13's in no time!
Miguel