I am looking to maybe put harnesses in my car this summer, but dont have a roll cage, nor am i looking to put one in it right now.

Who has been able to mount a 5 point in their car using stock seat, and chassis?

Would I be able to go to the rear deck for an anchor point for the shoulder straps?

Reason I am asking is after one event at limerock and way more autocrosses than I can remember, i need to find a way to secure my 230 lb 6'1" **** to the seat in those hard turns and braking situations.

Show me pics of your setup... please