The best solution I've found for the bolts in the rear yoke is a ratcheting box-end wrench (Craftsman, Ampro, Cornwell, Gearwrench, and several others make them, each with their own various features) I have the Ampro set, and it's 12-point 12mm box-end makes short work of those bolts every time, just use some liquid wrench, PB Blaster, WD40, or good ol'
tranny fluid on the bolts first and let them soak a few hours so you don't bust your knuckles or your wrench trying.
__________________
1976 Ford Mustang II Ghia: 302 with a 600cfm Edelbrock carb, Edelbrock Performer 289 intake, Dynomax Blackjack headers, 2.5" exhaust with Flowmaster Super 44s. RJS 11-gallon fuel cell, C4
tranny, chrome 16" pony wheels, fuzzy dice, brown vinyl half-top, and painted in the tackiest color ever (harvest gold, that's why I call it "The Goldenrod").
Also have a 2003 Dodge Ram (lightly modded daily driver/tow rig/office/dining room/home away from home/workshop... I call it "The Big Blue Dawg".)