Turboman
Mab An Gov
Not a fan of harnesses myself. Even ccv comp Motors you only require lap belts. If wearing harnesses binder you controlling your vehicle then stick to normal belts.
Join an offroad club a proper one like the Awdc or association of land rover clubs that will teach you how to drive. Myself and 300bhp had fun competing in the Nationals this year and it turns out points wise pretty much matched.
I used to have harnesses in my series when I used to drive in a few trials in the 80s. HD springs on the series, it was so bouncy the harness used to help keep my feet on the pedals.
Agree about AWDC, I was in that too back in the day, very experienced at running comp events and so on, I learnt a lot from being in it!