I knew i read that somewhere. Xpedro did that on the Aerosprite.
http://ecomodder.com/forum/showthrea...ent-28086.html
It wound up with a 1600cc pinto engine (& transmission) with the camshaft retarded 2 notches (poor man's Atkinson cycle)
Additional (2nd) Buick transmission, reversed, to gain up to a 2.5 overdrive