99 Villager rear motor mount

Does anyone have a video changing the rear motor mount on a 99 Quest? The shops says mine has disintegraded which is now causing my van to lurch into gear. Does that sound feasbile? Anyone have instructions? Is it easy or am I best paying a mechanic. I can buy the part cheap for $22. Is there any downside to not repairing this? I figure the car is at the end of its road right now.....