Brass caps, 1 3/4", threaded, O-ring sealed and vented. Vent can be removed for a non-venting cap. Filler necks are cold rolled steel 1 5/8" OD and about 1 3/4" tall.
Caps are all sold, dont see making any in the future.
email for more info.
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I've got a new set of 4 speed EVO sporty adjustable push rods, Crane cams part# 4-0020
-The pushrods where sold-
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More parts to come in the next few weeks.