are you sure it's JBA? A lot of guys have thought they had headers and then found out they only work on the ohv, this was talked about a lot, b/c some people thought they had sohc when it ended being ohv ones.
I know Borla has them for 02's and up but they are expensive.
Steeda Ultra Lights are nice, a friend of my sisters, her brother was selling one tight azz 01' Mountaineer, lowered on Steeda Ultra-Lights, dual Maganflow exhaust, FMS headers, B&M shift kit, K&N intake, Ford Racing plugs and wires, e-303 cam, and a diablo chip burned for it. My mom almost bought it for my sister, she's obsessed with the truck, and either sell or hold onto the 94' which was mine but now it's hers.
I went for a ride in it, and it was the first 5.0 Explorer/Mounty I've been in with an e-303 cam, holy crap, that truck flew with all the mods he's done, he said he cranks off 14.7 at 96.3 mph at Morosso in the quarter, and I believe him, it slammed you to the seat. He was only asking 23,000 including a 1500 watt stereo set up. He wanted to get an 03' Cobra, but the one he wanted sold, so he decided to keep the Mounty, my sisters

now lol. The truck was gorgeous though, tha deep blue color, and it looked awsome with the Steeda Ultra-Lights, and he said it rode better than the Cobras he had on which were 17's, the Steeda's are 18's right?
EDIT- expo5.0, I like the e-303

, his truck was sick for a NA 5.0, the Ultra-Lights really help acceleration, they are so light with a lot of reduced unsprung weight.