This set of bar are for 82 series Cub Cadet, without those the blower chute hit the nose, for a 149 you normally need straight bar, easy to fabric using flat bar, a drill press and a grinder to round the corner....Assuming you have the measurement from a fellow member here of course!
Beside keeping the chute away further from the hood wen you lift the blower do they keep the blower level wen it's down on the ground? By the way those blower don't lift very far from the ground..