Somebody, either here or on the FTE 1947 and under forum, has to have a wreck of a cab sitting in their field that has a cowl vent and surrounding metal they'd send you. I gave a similar 48-52 vent and surround to a guy on FTE. Shipping wouldn't be cheap, but better than trying to fab one. Stu
http://www.ford-trucks.com/forums/forum42/