Bushwackers came with instructions as well as various mounting hardware, bolts, straps and rivets. The installation was pretty easy if you take your time, measure, align and then drill. I did not use any double side tape.
SR5 Sport Flares are just as easy to install. If your SR5 came with the black/chrome fender trim, then for the most part your bolt holes are already there.
Biggest challenge will be the Limited Flares with Cladding. You will want to research folks who have done it for install tips. Not totally impossible, however, take your time, measure, align then drill once or you will need body work to repair your mistakes.
I've installed the both the SR5 Sport and Bushwacker flares if you need any tips PM me. Your biggest problem is finding the OEM SR5 Sport or Limited flares for sale, if you go with the Bushwackers, I found the best price on Amazon.
Hope this helps..........Regards 8sm