The diameter is not the problem, this machine is framed out differently from yours. The problem is the motor cable connecting housing, it hits the vertical frame of the pulleys the motor drives. I think, I say, I think, because it was rather late last night when I quit that I may miss something, that it is remove the little box and fab a cover for it and swing the motor cables towards the back into abother box, it just might work. Another option is to route the motor cables like the one in yours with protective cover on the cable entry into the housing.
I will try to mock the placement in the cubby hole the motor goes it, but will have to wait for one of my buddies to come over. After injuring my left shoulder, coupled with already injured right, I am sort of worthless right now.