I am going to install 6 point harnesses in my C7. I have the standard touring seats now, and plan to upgrade the seat backs to competition type using GM parts.

Do the comp seat bottom cushions have a slot for the crotch belts? If not, how do you get the anti submarine belts into position?

 

The comp seats do not have a slot for the crotch belts, but someone has done this modification before:

https://www.corvetteforum.com/forums...ion-seats.html

 

Unless you do some seat surgery, you need a modified approach like 4pt Schroth profi ASM belts or doing a formula setup where the anti submarine crotch belts wrap under your thighs and connect to the lap anchors.

 

Thank you. That thread answers all my questions.