They are actually Vintage Air P/N 49193-VUL from their Standard Series. I got them from Summit Racing for $7.15 each but they are closer $10 each now. The description is correct on the Summit website but picture is incorrect for some reason. I bought them in 2011 and checked my Summit invoice for the P/N. Also noticed that Pace has them.
Cut sheet from Vintage Air
http://www.vintageair.com/2012catalo...Page%2051).pdf
Summit and Pace websites
http://www.summitracing.com/parts/vt...-vul/overview/
http://paceperformance.com/i-5932113...ntage-air.html