I know this is an old thread but your receiving ALOT of misinformation the 709 does not dig 7 feet it digs 9 feet and the 607 was made well after the 643 and isnt compatible with the mounting brackets! The 907 dig 7'10" and was made for the 6-7 models I run a 642 gas with a 907 vertical stabilizers its supposed to weigh 1,100 lbs but my machine will lift it as high as you want.good size combo can still be towed with a normal sized truck.