Harness Question

Now for the Jdm look i cant get my hands on some takata harness belts, but what i can get is some 3 inch wide sparco pull down style harness;s. comments on this would be apriciated before i end up buying the wrong harness.

do you happen to have a full role cage by chance or anything.

Yeah i have a harness bar that i costom made at school in machine shop and its connected at 4 points of the car.