5 point harness in a car w/o roll cage...How to do it?
Ok Back to answering the Question posted...The answer is no, because you cant mount them properly. In order to mount the belts properly you'll need a cage with a cross bar mounted no lower than 4" below the drivers shoulders and not above. (According to the NHRA rule book) Reason being is if the shoulder strap mounts are too low it will tend to crush your spine in an accident. Not a good thing.
You didnt mention if you wanted too, still use the rear seat? I have the same style bucket seats not installed yet, but here's a pic for location of the crossbar. Everything forward of the main hoop you can eliminate.