I was just wondering about some flathead parts I have. I have 2 different late 49-53 timing covers. Both are aluminum. One is more compact and rounded while the other has the centre a really big circle and more like sharp edges. That one doesn't have any part numbers on it. I also have 2 49-53 intake manifolds. One of them has been stamped 2 and has a plug under the vacumn port while the other is stamped 1 and doesn't have a plug. I'll have pictures posted later on. I'm just interested in what years they were used and models.