Can't see a lot in the pics, the bendable end is under the track. The harness bar is Inokinetic. Their method of anchoring the lap belts is to the factory lap belt mount on the side of the seat. Problem with this is that when the seat moves the harness lap belt moves with it, while the shoulder belts will tighten as they are attached to the bar/car. With a 4 pt. it is very important to keep the lap belt low, and that's either a sub or having them attached to basically the car. (It is also important to have the shoulder belts super tight by the way). It may take me 20-30 minutes sitting in the car with helmet and hans on to get both belts adjusted just right. I run the seat back all the way, hook the harness up, then power the seat forward holding both the shoulder belts on the hans to make sure it is inside the raised ridges and also hold the lap belt down to get it as low on the pelvis as possible. I adjust in the pits to snug, then just before entering the track run the seat forward until it is borderline painful. By attaching the lap belts my way, it does not require pulling the seat, as you only loosen the front bolt. That way the factory belts do not have to be touched. I tracked a few high HP Nissan GTR's for about 200 track days with factory seats and 4 pt. ASM. I'm barely comfortable in a stock seat on trips, and as I have driven all my cars to the track, sometimes a long way, I didn't want a bare bones race seat. Maybe one just needs more natural padding to be comfortable in a race seat. My current philosophy after having a growing number of problems that came with a growing number of horse power and modifications, is just leave it stock except for safety and brakes. There will always be someone faster out there, so get your kicks from putting it around the track approaching your limit. Here's a 1:25 clip of my bone stock I4 at Spokane.
The loud blue Porsche behind me is a Manthey by the way. (He is a very good driver but just got the car and was feeling it out. The other cars behind him were going as good as they could tho. Let me know if you have any other questions.