by tvsjr » Tue Jan 24, 2012 2:48 pm
If you are building your own template for a mass install, I would agree (and would recommend making a physical template that can be placed on the roof). However, translating those measurements into numbers in an Internet forum, and then trying to use them has the potential for disaster. Plus, there are lots of possible variations that could affect what you're doing... sunroof, clearance lights, etc.
I have built my own templates before, but for vehicle #1 I would *always* drop the headliner. It doesn't take that long, especially with good tools (pneumatics FTW). And it minimizes the likelihood of a multi-kilobuck oops...