I did Camber using washers and extended bolts. I wouldn’t recommend running more then 3 washers on bottom but if you do put at least 1 washer on top. if you are using 1 washer on bottom then you don’t need to put washers on top bolts.
extended bOLTS
https://shop.advanceautoparts.com/p/dorman-pik-a-nut-cap-screw-hex-head-class-10.9-m10-1.25-x-40mm-99102040/9060251-P?searchTerm=m10+x+1.25
3/8MM FLAT wASHERS:
https://shop.advanceautoparts.com/p/dorman-autograde-flat-washer-stainless-steel-3-8-in-799-303/10658390-P?searchTerm=3%2F8mm++stainless+steel+washer
thank you
https://www.youtube.com/user/ckkbleev
https://www.youtube.com/channel/UClXFjT7W-yzUa8pwC0oXumQ
@tylerkerfoot