no it's not structural, but the rad is, and any change in the rad support affects the whole front fit .... OTOH maybe you tweaked the frame when you installed the different mount arrangement, like a new crossmember welded in?

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics