I dont run Evo 3's, I run Sparco Sprints. On the driver side I run all Sparco hardware. Steel side mounts (rather than the aluminum option to maintain weight rules for AX Class), Sparco Sliders and Sparco seat base. With the sliders in place I have the seat set in the lowest set of holes in the side mounts. I love where it sits (Im about 5'7").
Side Mount PN; 004902
Seat Base; 600SB039L (driver) 600SB039R (passenger)
Sliders; 00493
On the passenger side I still run a Sprint with Sparco hardware. I just don't run a slider. I simply put my tallest friend in the seat and placed it from there. I give a ton of ride alongs and haven't had any complaints.
If you are the only one who ever drives your car, I could see how you could use the Sparco mounts and not run sliders on the driver side. They have a TON of adjustment.