Which Bolt-ons are best for a 99+ GT?

[red82gt]

Thanks guys, I went through one of my MM&FF mags and found a dyno test for longtubes and an offroad H-pipe and the gains were huge! Something like 25hp and 30lbs of torque on an 01 Bullit. My friend would love to have a blower but can't afford it, he's planning on doing bolt-ons after saving up for a couple of months and see what each one is worth. He's going to get a B&M Ripper to start things off (he likes my Ripper) and then he's looking at the BBK longtubes and H-pipe (same as what they used on the Bullit, except he'll do the cat pipe instead).