Heating coils to lower

[dubie]

I know I have heard a lot of the guys here saying this is totally unsafe practice, but here in Classic Trucks Magazine, they have openly done it on their project Old School
http://www.classictrucksweb.com/tech/0402cl_oldsc/

a direct qoute

"After many months of cutting, hammering, shaping, filling, welding, sanding, primering, and spraying, Project Old School finally has a coat of black suede on it. We left off last month by torching all four coils 'til the '64 was resting on the bumpstops and bolting on the new red steelies and wide whites from Stockton Wheel and Coker Tire, respectfully."


SO is this safe or not??