get the super tiger g90, use a bisson pitts muffler on it- side mount the engine. put an idle bar plug- i use fox long plugs. use 10% fuel.. it takes break in to get the idle to settle down, but this is one great engine. use an apc 14-6 prop- forget master airscrew.

the idle misture will need to be adjusted as it breaks in. give it plenty of cooling air. use 10% fuel with some castor so if you run it a tad lean at times it won't hurt the engine. set the high end so you get some smoke from the muffler at first. then when it warms up fully in the air after a couple minutes the engine will really come on strong. - especially on those strafing runs .

god luck with the warbird- which one do you have?

ed