I run the Weber 38/38 on my 258. It works great. Off idle response is excellent, I havent had any issues at all out of it. It hasn't flooded out or stalled yet on an incline.
88 Wrangler, Rebuilt I6, NV3550,Atlas 2,B&M Shifter,38/38 Weber, Skyjacker Lift & Nitro Shocks & Stabilizer, Black Diamond Discos, 35 " Regul MT's & Outlaw 2 Alum Wheels, 4.88 Gears, Dana 35 & Super 35 kit & Detroit Soft Locker, Dana 30 & Superior Axles & Detroit Soft Locker & No Disco, SRC Front & Rear Bumpers, SRC Side Armor, Warn XD 9000 I Winch & In Cab Controls, OR Fab Tire & Can Carrier, Rock Hard 4x4 Full Cage, Hood Rack & Hi Lift & AX, Outland Seats, KC & Silverstar.