As I understand it yes the '77 is semi-electronic, and '78 and up are fully electronic.
Sealed, the one the PO put on mine is routed to the glovebox and the aircleaner, so the vacuum from the aircleaner pulls dry air from the glovebox through the dizzy cap. I dunno it runs good
Rising Sun Bio
2F "Brahma" + Lockright, tach, Warn 8274, FJ60 Power Steering,
no more Sanden OBA
1FZ-FE factory lockers +
Safari intercooled turbo, CDL switch, cup holder, Metric TLC leather, heated seats, JDM switches, PUMA OBA.
Warn M12000 waiting for a bumper.
Limited TRD 2UZ-FE SOLD