Strip till at FPS!
there is no 22" here. yet. wink wink. lol
I would believe blue jet right now could set you up with a 15 inch or 22 inch. they use a main frame system and not a single tool bar. more expensive but it spreads the row unit out length ways and side ways for good trash flow.
I am as of today a dealer for remlinger. ( second one up in the pictures) I think they would fit a 22 inch spacing but i will check into it.
hp really varies. my 8 row unit with thin shanks like remlinger the 4640 (180 hp)could pull that easily to 8 mph at 8" deep.
the unit i built with a chisel plow shank and 2" point you know its back there. just like pulling a 6 shank chisel plow. for hp wise i would go off of what kind of chisel plow can you pull. then figure about 75% of that power for the same number of rows. clear as mud right!