it was .63 a/r on intake and something similar on exhaust but I forget the exact number. The hotair turbos were slightly different, I don't know the # for them but 86/87 (intercooled years) ran a garret tbo348. manual transmission? you're joking, right? There were no GN's with a manual transmission from the factory. ever. As far as clockability goes... somewhat. I've only seen one guy mess with it, he put an 87 turbo on an 85 car, and this requires some clocking because of the location of the throttle body on the 85.
