I have the H9 P-47 with the Zenoah G-20ei and it flys great, its just a little on the slow side.
I am learning more and more about the hobby, and experimenting along the way, and was looking for some advice to get this plane going fatser.
It turns about 8700-9250 rpm with props from 14/10 to 15/6 with the G-20ei.
I was thinking of installing a different motor.
I compared the weights from some other motors and this is what I was thinking of trying and was hoping I might get some insight and feedback.
Also, I will be beefing up the firewall and adding some support inside the fuselage by the firewall as well.
Heres the motors (maybe these are way too much motor, but like I said, I am learning)

Zenoah G-20ei wt. 41.6oz
Saito FA1804 stroke nitro wt. 31 oz
Saito FA 220 4 stroke nitro wt. 38.50 oz
OS160 FX 2 stroke nitro wt. 32.6 oz
OS FS 200 4 stroke nitro wt. 30 oz
DLE 30 wt. 38 oz
YS 170 DZ wt. 35 oz
Evolution 26 GT gas wt. 33 oz

I was comparing motors from Chief Aircraft and got the info on the motors there.
With the bigger motors I figure I will need a prop with a higher pitch for speed and also because 16" is about as big as I can run.
Where can I get a prop with a higher pitch so I dont over rev the engine (or maybe use a throttle stop to control the rpm if neccesary)
Thanks guys,

I have a H9 P47D .60 ,size and a Saito FA-100 handles it easily

Sounds to me you need a differnt type of airplane, not a warbird. Tha Saito 100 is the perfect size engine to fly it.

a YS 170 or an OS 160 will pull the wings off if it literally. That plane is not built for super high speed passes; fast yes but not 150 mph. The Saitos and the OS 200 would be close behind.

I was hoping for about 90 to 110 mph..
Im not sure what motor and prop combo will do this, but I am adding to the firewall, and ribbing the fuselage frame members to the firewall, and not sure what to do about the wing to strengthen that and also going to add epoxy to all frame areas and new hinges as well..
I wan it to go fats without the wings or the rest of the plane flying apart.

a YS 1.10-s, or the new 1.15-s would be ideal for this plane and would turn a high pitched prop..........you'd still probably be at 1/2 throttle for fun, and full throttle for unbelievable vertical.

i have a 1.10-s in a GP Super Skybolt and the thing takes off at 3/4 throttle and goes straight up until i decide to pull back on the stick.

the engines you listed would be interesting though for all of maybe 15 seconds before the wings depart

Just wanted to let you know i put the OS1.60 in my Hangar 9 P-47 60 scale and it flys great.
Had to move the battery behind the CG from where it was previously in front of the CG slightly.
Flys and lands great.
I did add an additional 3/16 to the firewall and added gussets behind the firewall that tied into the firewall and fuselage.
I didnt fiberglass the two wing halves together yet, but I will do that soon.
That was with an APC 15/13 prop..

Toggle, did you reinforce the wing yet

I'm trying to figure out how you are getting so much speed on a 12 pitch. Do you know what RPM you are turning on the ground?

An O.S. 1.08 2 stroke will fly it exactly how you want. I had one in a 60 size TF P-51D that was AWESOME in flight and border line SCARY at times.

I Agree the saito 100 is the perfect choice for the H 9's I used one in my H 9 spitfire lots n lots of power spinning a 14x8 prop.
The spit is long since gone do to a radio fail but still have the saito 100 and just added it to my club web site up for sale $150.00 .
Good luck with an engine choice