Can I put 5 point harness's in my 71 malibu with a stock bench seat? i dont have a roll cage and dont plan on putting one in any time soon.

Probably not,,I do not think it will pass NHRA muster, check with your local NHRA track.

It won't pass tech. You will also have to reinforce the floorpan where you mount it. That is a lot of force on sheetmetal and a washer that weren't designed for it.