Here is a tasteful item for your flathead. Cast in A-356 aircraft grade aluminum, and precision machined to our picky standards. We built baffles into the tube - to avoid oil being thrown up and soaking the breather. The breather itself can be positioned to align with your other finned items. We include a gasket, but not the bolts. We kept the profile low (4-1/2") to not be a clearance issue. The finish is in your choice of show quality polish or unpolished. Made in USA.