Decision: 5x4 (SBP) or 5x4.5?

Small bolt Kelsey hayes discs are a way lighter set-up also....73- up very bulky.. I do understand small bolt wheel selection is limited, but I've been collecting 5×4 wheels since the 80's...I really like the 4piston set-up...not gonna waste your time with bullshit info...if you say you already have the small bolt setup. You can get rotors with big bolt from the ram man..if you wanted 5×4.5...