You can still use the SR5 wide flares without drilling, just use a form of automotive gasket maker commonly known as a Form In Place Gasket- an RTV used for oil pans and such. I used a very similar product called "gloozit", this stuff dries hard yet remains flexible and super strong...It alone would've worked without using clips like I did..but finding a complete set of these flares will take patience as they're not easy to find..Ron Helmuth assisted me in a big way achieving them.
SR5 black plastic flares are probably your best bet, it requires absolutely no drilling as they're mounted by screws under your wheel wells. If you have the chrome trim just remove 'em and use the exact mounting locations.
Limited flares...just too much work involved I think.