Don't know if the install height is different between mag and LA head.......
Either way, a Chiv(Chevy) valve is similer in stem diameter as the mag valves and cheaper.
Would require a machine shop, either way, as the valve stem diameter is : LA 3/8"diameter, mag 8mm and chiv 5/16(?)
all will require the guides to make a different size.
stem install height cam be adj properly while the head is in the shop.
