my new emblem is stashed in a box somewhere but i measured the hood on my 74 and there are three pin holes for the emblem  the outside distance from the first pin to the third pin is 5 1/4 inches. so im going to guess and say its a 6 inch emblem.. but im not 100 percent on that.

Good deal guys, thanks so much. Not sure what this emblem fits but maybe someone can use it? http://cgi.ebay.com/ebaymotors/AMC-JAVELIN-EMBLEM-N-O-S-PART-4485318_W0QQcmdZVie wItemQQhashZitem20af9e9450QQitemZ140385358928QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories