Thank you for the reply re the valve covers being the same size internally. I do see that some years have two stove pipes (one each on the passenger & driver side for a breather cap and for a PCV/cup as opposed to other years where one cover has a stove pipe for the breather and the other cover has no stove pipe as it instead uses a rubber grommet into which the pcv is inserted. Is there a key or guide that tells what years & model Barracudas, Valiants & Darts took which style covers? I have a 64 Dart GT Convertible & 66 Dart 270 2dr hard top that have the two stove pipes for breather & PCV/cups but someone replaced my 66 Barracuda valve covers with Edelbrocks & I want to replace the Edelbtrocks with OEM Mopar covers but I do not know if it should use covers with one stove pipe & one PCV grommet vs covers that each have stove pipes. Thank you. Eric
