When I cannot attach a belt to a roll bar, I attach it to the floor with
a metal backing plate so it won't pull through, ..........and so it won't
come loose should the seat tear loose in a crash.
nolexforever is correct about the lack of a roll bar/cage, and for the expense, harnesses *might* not be worth it for support during
autocrossing.........but maybe it looks good at a car show.-Bob