[68protouring454]

use .023 mig wire.er70s
we use silicon bronze as it requires alittle less heat then er70s filler, we use .035 tig filler rod but thats as small as i can get it. It metal finishes as nice or better then steel.

Not sure I follow you on the sealing of tulip panel etc. we usually use fusor metal glue(108 or 110b) for the tulip panel to quarter panel seams, you can clamp them underneath fairly easy. provides a very nice seam for seam sealing before paint. we then plug weld the window seam and the trunk weather strip seam, if leaving trunk weather strip piece in place we will glue that seam and use 3 kleckos to hold it together