[twobjshelbys]

Get a 4-point setup from Simpson. Then get the roll bar cross member from Finish Line and attach the shoulder harnesses to the cross bar. This is for the driver side only. For the passenger side unless that side also has a roll bar you shouldn't use shoulder harnesses since there is no point to attach them. Some go through the back and use a cross tube but it's too low for the shoulder harness to mount.

Here is a Crow lap only
https://www.seatbeltsplus.com/product/1127-X.html

Here's the crow shoulder
https://www.seatbeltsplus.com/product/1135-X.html

They may have a 4-point config but I didn't have time to look.