These were a very very short run of cast aluminum big finned air cleaners. Fits 4 Barrel carburetors and uses the 6-3/8 inch by 2-1/2 inch flame retardant filter kits with base. Please PM if interested or have questions. -Jason
I found one last one in the office. This is it, the last one and never ever to be made again. Shipping in the US is $17.05 with USPS including insurance. Thx.