John,
From my very limited experience with the narrow frame hydraulic lift... it is likely worth as much or more removed from the tractor and sold separately... You can probably get 350 to 450 easily for the pump and rockshaft mainly because it can be shipped in a box to someone who is looking for one...
Attached to the tractor it will limit your market to a much smaller radius.
The same applies to most of the other sought after accessories for our cubs... (fenders, lights, weights, creepers three points etc)... they always cost more separately yet you can buy them on a tractor for little to no more.
Just my thoughts... which may not be worth much! 
__________________
Jay
40 years of Using and playing with IH Cub Cadets!
Proud owner of the following:
Cub Farmall, Super A Farmall, Original, (2)70's, 72, 100, 102, 123, 105, 125, 127, 108, 128, 1450, (3)782's, Yellow 982, 1782, "Sam's" 2182, M Farmall and a #7 trailer
|