All right first off ...its not a blazer...its a chev 1500 (early 90s full size blazer ...with a box lol )

I got a sweet deal on a lund visor for my truck and ...I cant find any real good how to videos and ive always had good luck here so figured id ask

From what I understand is, drop the headboard, mach up where the visor should be ...double then tripple check drill holes and bolt it in then silicon it inside and out ?

If anyone has some tips that be awsome or if you do this daily even better lol