[78SilveradoSWB]

Autozone, Shucks, Kragens sell the Haydens under the Imperial name. The Hayden part number 3690 interchange with the Imperial part number 226116. I contacted Hayden and thats what they told me. If you buy them through PartsAmerica.com online which is their internet sales site, the 14" Imperials are $74.99 each and after ordering them you can pick them up at nearest Autozone, Shucks, or Kragens which have them in stock. If you come in off the street and buy them, they are more expensive. They are rated at 1250 cfm @ 9.8 amps.

I found 3 new ones on eBay which sold for just under $50 each, but at the last minute decided not to.

I was going to buy them, but I found some others that are rated at 1950 cfm each for similar price at Zigs Street Rods.com which has their store about 4 miles from me.