I found a '99 PS IC (i think it fits "99 thru '02 or '03 or something) last year on Fleabay for about $100-125 frt & all IIRC.
I think that one figured about 1000cu inches.
Actually, it fit in front of rad & AC condenser really great for me. I did some spacing out on some stuff.....out about 1" on IC, tube grill, lower valance (or whatever it's called...the tin work under headlights & across front), & got about 2" or less space between IC & AC condenser. I didn't have to modify the hood latch either like I thought, or drop or move anything doing with the swaybars.
I got it all mounted, all the mods. done, & then got too busy to finish running the tubing & hook up, etc.
But it sure looks good sitting behind the grill!!
It would look better if my wife hadn't moved that 16" Juniper tree out into the middle of the driveway!
Sometimes your bumper & grillguard can get bent
BigTime if you crank it to warm up, run back into the house, but forgot to set the E-brake on a sloping driveway........
(on the brighter side: folks get out of your way quick when they look in rearview mirror & see you come flying up behind)