That 3100 stall might stall at 3100 for your car, but it will change with power output. Like if it stalled at 3100 for a 250 rwhp car, it will stall somewhere like 3400-3500 for a car with 350 rwhp, etc. If I were you I would run it as-is. With PI, you get one free stall speed change anyways, so you might as well try it out. If you don't like it, you can always cash in on that stall speed change. Just remember to keep your receipt!
'98 Cobra Coupe