im fed up losing to 5.0's i spin so bad that they jump 4 cars in front out of the hole then i barely beat them or just barely lose its embarrasing because my car ran 13.9 before any of the mods below

 

The only mods i see in your sig are the stall and the cutout. Everything else is pretty much rediculous to list in your sig.

 

what gear do u have? what are your 60's on street tires? u may not want to put them on. they wont help much if u dont have the power/gear to turn them. 13.9's are not bad for the mods in the sig.

 

I think you should get a set of drag radials from Nitto or BF Goodrich. A buddy of mine has his 2002 Z06 at the track yesterday and he cut a series of low 1.8 sixty foot times on street tires (not even drag radials), and he has significantly more power than you (his car runs 11's on drag radials).

Get some drag radials and work on your driving technique before you make the investment in slicks or ET Streets. Just my .02