I've got a 70 Chevy C30 Longhorn I'm converting to 4x4. I have two Dana 44 frontends, one is a 70 model with 4.56:1 gears, the other is a 75 model with 4.10:1 gears, both are external hub. I also have a 1 1/4 ton M715 six lug Dana 70 with closed knuckles, 4.88:1 gears, and drum brakes. I need to find at least one set of Dana Spicer external locking hubs for the Dana 44s. I also need to find out if anyone knows if there are parts avaialable to convert the Dana 70 to eight lug and disc brakes, and possibly a set of lock out hubs. The rear end is an Eaton HO 72. I need either a set of 4.56:1 gears, or a set of 4.88:1 gears, and some sort of locker. I also need to know where I can buy the removable center panel for the floorboard. Thanks.