simplified, the 1T sheet metal is all the same as the 1/2T -just pop into the
41-46 gallery and start goin thru the entries, you'll find pics of the details in someone's page - I haven't heard of any reproductions for the 41-46 sheetmetal, but if you check some of the suppliers on the links page, you'll prolly find some patch panels
I guess in Korea you have a hard time finding another truck to scrounge parts from!
Bill