cab roof swap, or fix

[russellrox]

I've got a 63 c10 swb, has rust over the windshield, just starting to get pin holes through the top roof skin, I have found a place in red deer alberta that sells the inside panel the goes around the windshield and goes back towards the headliner about 10", Lmc truck sells the outside piece that I need, should I buy a chopped top and drill all the welds and use those pieces or should I just do a whole roof swap. Who has done this before? I have a pic of the rust in my other posts from this week if your wondering how bad it is.