The genius at O'Reilly has been ordering parts all week to no avail. I should've known to come here the moment he asked if my 454 was gas or diesel. Can anybody help me find out how in the world to get the hydrobooster, the thing that mounts to the firewall? Mine sprung a leak and I've been trying to avoid getting one from the dealer. Autozone, O'Reilly, Napa, anywhere else, anybody got a part number? 92 Suburban 3/4, 454, 4wd. Thanks a million.