stands under the rear axle/not the rear subframes so the springs/axle is loaded (& you have room to work). Front jacked up roughtly the same amount. unbolt rear ujoint. shove the yoke in all the way in the trans. measure C to C. subtract 3/4". give that dimention to the shop. That yoke ain't in far enough. Mine was not that far out & I had a part time vibration problem

live every 24 hour block of time like it's your last day on earth