I just installed a set of sparco 3 points in my 87 with 01 seats. the best way I found for them to fit is to run the side belts in between the back of the seat and the bottem then attach to the rear seat bolts in the floor. the rear strap I atttached to the where the retractable belt would go in the rear seats. I love them, they will hold you in good.
So far I got the drivers side opening like that. Going to see how I like it for a month, and then do the other side. It's all custom, and a pain in the ass. Right now I can't get my fender on, so I am trying to figure that out. -J
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