Spent a little more time in the garage today.
First thing I did was get the passenger seat frame all cut and tac'd in place
Then I figured before I start mocking up the passenger seat I'll finish up with the driver seat.
So after lots of measuring and getting in and out of the seat to find the perfect height and position, I trimmed up the mounting tabs I have and tac'd them in place. After tac'ing them I marked the spot for the bolt on my seat frame and pulled it back out to drill them out.
tabs tac'd in and the seat bolted in, driver side of the seat looks the same
Then I slung a set of harnesses on the seat to look into getting the mounts tac'd in.
for the hip harness I have 2 mounting tabs to choose from.
The first set are double sheer purpose built harness tabs. The only thing i dont like about them is how big and bulky there are. I will obviously notch and trim them up so they fit tight around the tube for a good strong weld.
The other option is these little seat tabs I have. They are 3/16" thick so they are tough enough for the task. The pro's would just be how small and low profile they are. They bad part is I'm not sure how much i can trim them down to fit snug on the tube just because how small they already are. Also with them being so small that means less weld area.
I'll probably end up using the bigger ones.