Actually, if you read the installation instructions they aren't intended to mount to a roll cage. The instructions show drilling a hole in the floor for the shoulder belt mounting. My current harnesses are mounted to the shoulder belt mounting point.

So are you going to make a new mounting point in the floor behind the seat?

Actually, if you read the installation instructions they aren't intended to mount to a roll cage. The instructions show drilling a hole in the floor for the shoulder belt mounting. My current harnesses are mounted to the shoulder belt mounting point.

Are you talking about where the OEM 3-point harness attached over the left shoulder on the driver side?

Here are some pictures of my WesCo install...

Dave's 1972 Datsun 240z: Seatbelt upgrade

I installed the Wesco roadster seatbelt kit in the spring and put 2600mi on them this summer and my only complaint would be they are kinda touchy about locking up as you pull them out to strap yourself in. Not a big deal, you just learn to pull it out slowly, on the other hand that is a good thing. Very comfortable.

Chris