roof rail

Hi there, I am considering designing a roof rack for The 250/550. Does anybody have any ideas on how to get ahold of some 3D models/measurements of the roof and mounting area? I know Prinsu was supplied with 3D info directly from Lexus so in theory, this stuff exists somewhere. Thanks!

Hi, new member here, I own 2020 LX. I wanted to know if anyone have seen this felt / blue scotch brite near the roof rail before. A tiny bit of it is stuck between the rail and the rubber. Not sure it was some shim from the factory assembly or a detailing job got it stuck there.