Richard,
You had a TF P-40 !!! Wow so did I, mine was done up in P-40F STUD out of the Squadron Signal pub. Loved that plane.
I ran my 2.4 in an overweight (19lbs) Yellow A/C Cap10b w/smoke for two seasons. The 2.4 pulled like a mac truck. Ive crashed the heck out of my motor and keep rebuilding it, I've never spent more than $140 bucks to bring the motor back to brand new condition. Gary says you can't destroy one because there is always something you can save. I thought about a 19x10 and that prop should pull the Zeke pretty good. Try a Beila 19x10 or 20x8 ($40 -$45 ) from Aircraft International we have flown them and they really pull.



Good Luck.

jds