Which begs the question, why doesn't he use the DB.......Be cheaper to buy a scrap hedger and rob the hydraulic system off it and graft that onto the wrapper!!!
or the other option, mentioned in the last bit of the OP
Changing the tractor isn't the cheapest solution, but a 7610 is far more useful/capable on a farm, much as I liked the old 4000/ 4600's.