dh explain the snidy 'not like in the one above' remark
Go read your MSA Blue Book about harnesses, joy boy.
Can't fix 'em to any of the seatbelt mounts - very poor practice and unsafe. Either off-centre, or way too low - spine compression ain't a good look.
2", four-point harnesses are a complete waste of time, too - broken collarbones on impact anyone?
Gotta do the lot - cage, 5/6 harnesses and buckets, or don't bother. That's why it's taken me many months to get to the point of ordering a proper cage (soon as the MG leaves my place).
Tracks also show up worn bearings and bushes and also accelerate their demise a lot faster than in a road car - there's always jobs to do.
Once you've fitted a cage, you need to wear a helmet in the car at all times, due to the proximity of the cage to your un-lidded head - road car FAILage at that point.
You'd be better off getting an MX-5, unless you're nailed-on to VWs - more RWD fun.