I'd like to install 4-point harness on my driver side stock seat. I found the 2 bolt holes in the back to connect the 2 shoulder harnesses, but unsure as to where the other 2 waist harnesses connect to. Is it the 2 rear bolts that holds in the seat?

Also could use a recommendation as to which harnesses to buy. Soemthing strong, safe, and reasonably priced. Lookin at Corbeau. Is that a good choice?