Date: 12/31/1969 Views: 2557
Date: 10/11/2009 Views: 2697
Date: 11/29/1999 Views: 3486
Date: 08/23/2023 Views: 143113
Date: 05/23/2007 Views: 549307
Aluminum flanges were added to the plenums so that the plenums would not need to be fastened directly to the hot heads. Later in the build, the pop rivets were replaced with machine screws so that the front 2/3 of the plenum could be easily removed