Trimmed and sanded both plenum and transit duct for fit and additional glass work on plenum. Spent a bit of time on transit duct and think I've finally got the fit I need to back plate on the SJ FAB. Nice and snug to rubber gasket on air filter and a smooth transition to through the back plate. Received the oil cooler kit to mount on firewall and butterfly valve to control cold air to oil cooler. Also received a couple cans of epoxy paint for the interior of lower cowl. Continued working on the oil cooler placement with a scrap piece of angle to hold the oil cooler and to check fit of oil lines and scat tube to firewall.