Back in the day I hemmed and hawed about cutting the dash. But in 1990 I did it in my Jimmy for an Alpine pull-out CD player. Best. Mod. Ever. If you are driving the truck a lot (and I spent at least 15 hours a month between Lubbock and Austin at 55 mph...) and it let you hear the music with the top off.
When I got my '70 Sierra Grande big block truck (2 owner, 117,000 miles almost all original in '98) I didn't even blink when it came time to cut. First thing I did after disc brakes.
Now with my '69 short step: cut. Once again pluses out weigh minuses. IMO, mods on trucks that are done well (this IS important...) don't negatively hurt resale. And, once again IMO, they make it better to drive.
Cut it. But don't F it up.
