Sparco Seats

Ok...I've got these sparco seats sitting in my soon to be "Tuner" VW Beetle. I want to put seat belts in it but don't know where to put them, or what kind to use. If I want 5 Pt, do I need like a roll cage to attach it to or just the floor? 3 Pt. is pretty easy but looks really dumb with Sparco seats. Need help!

Dude, i would go with some 5-point and you dont need a roll cage, just attach them to where the seatbelts are put into in the back seat, thats what most people I have seen do.