Some of the ribtec seats are deeper than the euro seats (does it wrap around) that come with the karts.
If you have access to a standard seat you can measure for the differences, then follow your recommended set up dimensions.
So you and Kirk Deason are going to be running in packs huh? The other “Hard Kart” out there.
Glad to see you getting back into the seat. Some of your car experience will help your kart driving for sure.
Rick