Originally Posted by *B2*
I would weld tubing to the bracing around the perimeter of the cutting area and then cut the bracing and roof skin all as one. Does this make any sense?
Since you are leaving the metal around the perimeters, and do a hoop of steel stock around the opening, you probably will not cause any serious issues.
What you are planning...it'* not like carving the whole top off for a targa or convertable...then find out the next day that the doors don't open or close anymore cause the body sagged.
The bracing in the roof is more to support the skin of the roof and the headliner. Yeah, it stregnthens the car by transferring torsion loads across the top of the car, but your new tube around the opening will do that as well to some degree. You are just doing a sunroof...ok, your going to "super-size" it..but it'* still basicly a sun roof.