<<Fel pro OS 34510T sure isn't $40 around here.Check around. Jeff>>
Make sure you get the right gasket for your oil pan; if your pan is the original, it takes the OS-34509-T gasket, with the "thin" (0.22") front seal. If it's a Service replacement pan manufactured after 1975, it takes the OS-34510-T gasket with the "thick" (0.41") front seal. If you have the later pan and use the earlier gasket, you'll have an oil leak you won't believe.
If you're not sure which pan you have, flip it upside-down on a flat surface (without a gasket) and measure the radius of the front seal opening from the center of the opening down to the bench top. If it measures 2-1/4", it takes the original "thin" front seal gasket (34509); if it measures 2-3/8", it takes the later "thick" front seal gasket (34510).