I have a stock turbo manifold, it has 2 cracks I wonder if I can weld it, will it work? or will it not help?

i just bought '89Conquest head. Can anyone help me to identify the letters in the camshaft to check if its stock or aftermarket.   J 4 H-116   http://i1072.photobucket.com/albums/w366/carlosa76/019.jpg   http://i1072.photobucket.com/albums/w366/carlosa76/018.jpg   http://i1072.photobucket.com/albums/w366/carlosa76/017.jpg   http://i1072.photobucket.com/albums/w366/carlosa76/021.jpg

whos uber excited and looking forward to seeing all my sq family       THIS GUY IS

i got a set of used clear foglight lenses i never put them on, and bought some smoked covers instead.   i piad 25 shipped for them so thats what im looking to get. or interesting trades.