Take a look at the routing of the exhaust manifold. One bank of exhaust pipes runs to the other side, making a pollution-free power plant.  Seems so simple!  This 1928 Ford Sports Coupe was built, and is owned, by Tim Monroe, one of the specialists at Davis Rod and Cycle. Has a 1974 Chevy 454 cu. in. V8 powering a GM 400 Turbo-Hydramatic.  He also owns the wonderful custom 1951 Lincoln Capri in an earlier post.  See link at right for Davis Rod and Cycle.