Nothing fancy- - - -just a straight across pipe a little ahead of the mufflers. If you can install a T fitting in both pipes, you might want to have a muffler shop bend a crossover to clear the transmission tailshaft or driveshaft, depending on the location of the mufflers. Then either clamp or weld it into place as you assemble the system.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!