Edelrock air fuel ratio set up #6593
i used it for a year and change-works well. You will need a new Oxygen sensor bung. This is a narrow band set up so you guys boosting with efi this is probally not the ticket for you. I used it to tune my Carbed SBC
$75.00/offer
summit link
http://store.summitracing.com/partdetail.asp?autofilter=1&part=EDL-6593&N=700+115&autoview=sku