Steering box upgrade

Looking at swapping out the power steering box, for either the manual box or the Borgeson power box. My question is how do the two of these stack up size wise? Which one is smaller? Needing this for header clearance more than anything else
Two different animals. I offer the borgeson bolt in kits that are compact and offer truly modern steering with super sharp response. Manual boxes are the smallest and simplest, but unassisted steering only appeals to certain people. What header/engine combo?