Why not drill the fire wall for brake booster?

[ianwcox]

Greetings Gurus!
I have spent many hours reading about brake upgrades and am ready to whip in to O'Reilly's and buy a brake booster and dual master cylinder for my drum/drum 65 C10 economy restoration. Sounds like a 1970 C10 booster/master cylinder combo should work for drum/drum with no need for a proportioning valve or metering block. I'll just need to do a little plumbing.

What is the big fascination with not drilling holes in the fire wall? I've read page after page about Cap'n Fab's bracket and extending the linkage, but why? is there a clearance issue that I'm not seeing? This doesn't look nearly as clean to me as a flush mount booster. Plus it costs money (which my wife apparently needs for groceries) and who is actually scared about drilling holes in these trucks? We do it all the time for everything else. What am I missing guys?

Thanks in advance for the sage wisdom