I need to replace the seat mounts and sliders in my 1989 Wagon racecar, the old sliders barely slide (slightly bent), and I also needed more forward travel for one of our shorter drivers.

I was looking at Sparco bases and ordered the 600SB168L 1988-89 Civic Hatch as per all sites I found, this should work.
It does not. The seller is confused, sent them pictures and they are taking it back with no fees.

The only other units in that age range are the CRX 600SB173L or CRX SI 600SB167L. It is hard to tell as no sites/vendors have actual pictures of the physical product, just the stock Sparco 600 image.
Which one would you choose? Should I Look at other mounts entirely?

VIN: JHMEE2750KS002583

Pics below of Seat, current mounts and interior of car.