side marker help!!!!

http://cgi.ebay.com/ebaymotors/Side...rQ5fTruckQ5fPartsQ5fAccessories#ht_500wt_1182

would these fit my 71 demon?? the front markers look way to short to fit on the car. it say on the page that they do fit but i need a lil advice before i buy. plz n thanks