Softopper on extended cab

there is not a real bug proof gapping between the cab and topper. You can self tap snaps for it but bugs can still find their way in if camping in it and a light source to attract. No issues with installing on liner

 

interesting. This liner looks exactly like mine except mine goes over the sides of the bed. So I can not access the sides to clamp down. Looks like I’ll have to cut holes like this:

 

I think the PO may have trimmed the tops off to facilitate a topper he had installed. I removed and sold it. So you may want to do some trimming.