Quote Originally Posted by JDMrequired
if this is becoming a common sense issue, then let me give my ameteur & equally important opinion

ok. so a factory seatbelt is a strap that crosses the torso & a strap over the waist, right, so a 4-point harness also has a waist strap, but instead of a single torso belt, there are two that connect to a camlock in the center of the waist rather than just 1 coming from a lock on your right side.....where is the hazard?
Nobody answered your question and I think it's worth answering due to safety. In case of a rollover, the OEM 3 point allows you to lean forward or to the side to protect your head. With a harness, you are stuck in place and your head could be crushed. If you're running a harness without a roll cage, good luck to you.