Oh yes, I remember seeing your engine pic before...
That inlet manifold looks just great!
Having used one of these Overdrives in a series of Austins back about 30 years ago, I can vouch for their effectiveness in both city and country use. Terrific things as set up for 'automatic' use, even better if you want to fiddle with them and use them as a 6-speed clutchless gearbox, though you have to have your wits about you at times doing that.
