Racing Harness in Prostreet Truck

[71chevswb]

I've got a 68 c10 with a mild built 454 big block. I'm using factory lap belts right now but want more safety. This truck is a grocery getter not a track truck. It will probably never see a drag strip. My question is what kind of seat belts are you guys using in your trucks? I'm trying to avoid adding a roll cage due to more holes in the nice rust free cab. I love the look of 4 point racing harnesses but not sure how to safely mount them into my truck with a bench seat.

Any suggestions or ideas? Post pictures of what you guys are doing! The attached picture is what I'd love to end up with if possible. Thanks!