Help! more top end speed

[Wraith]

Well I need some more top end speed. I was racing with a 2002 gt (standard)mustang and had him beat for about 30-40 seconds but his car slowly started creeping up on me and eventually slowly passed me up. I needed an extra push but my car couldnt do it. I smoked the guy on take off which was why I had him beat for a while. I drive a 95gt (aod). What can I do to help with a little more rpm range or an extra push.

mods:mac cold air intake, 70mm maf, pullies, cobra upper lower intake, shorty headers, o/f h-pipe, 1 chamber flows, 3:73 gears, shift kit

Thanks guys!