need a cowling latch

I have an '84 Tohatsu 70HP and I let the front cowling latch get loose and the bolt backed out so I lost the outside portion of the front latch. Parts are hard to come by for these old engines but I figure that the latch is probably a pretty standard part that is interchangeable. Anyone have an old engine that doesn't run anymore and can spare the latch? If not, any idea of the best place to look for a replacement?