Seatbelts with a twist.

Hello Experts.
I saw this with full assurance that someone will be able to answer my qualm
I'd like to know if this is it possible....Do they sell, racing. Seatbelts (4-5 point harnesses that are used with track cars that have rollbars and/or racing seats that have the cutouts to pass the belts thru them but........just as the lap belt ?
In other words the way the stock belts are on the car originally to be replaced with only those two pieces seat belt ?
No shoulder belt etc..

Thanks to all, anyone that most probably knows the answer and needs to educate a novice ...like Myself.

Thanks.
MAPS