Got a pair of Holley 660 center squirters for sale. These carbs have mechanical secondaries. They were rebuilt last year and work perfectly.
They have the extended transfer tubes and secondary metering blocks
for four corner jetting.
$450 for the pair.
For comparisons sake.
Holley 660s on ebay (http://cgi.ebay.com/4224-660-CFM-HOL...2QQcategoryZ31 7QQssPageNameZWDVWQQrdZ1QQcmdZViewItem) Those aren't setup with the secondary metering blocks and extended transfer tubes.
Summit and Jegs sell these things for $500 each brand new.
Summit price (http://store.summitracing.com/partde...5&autoview=sku)
http://jetboat.homestead.com/carbs_done_copy.jpg
Just to level the playing field.......If you were so inclined, the kit to convert the ebay, Summit, or Jegs carbs would be $45 per unit.
http://static.summitracing.com/globa...hly-34-6_w.jpg
Metering block conversion kit from Summit (http://store.summitracing.com/partde...5&autoview=sku)
If interested you can email or pm me.
Thanks for looking.