the stg90 is at least as powerful as the saito 100. plus the g90 idles low easier- unless you are willing to use 30% fuel in the saito. they both take breakin. they both need good cooling air. the st carb is much easier to adjust. with a bisson pitts muffler the g90 runs really well, at least with an apc 14-6 prop (forget the master airscrew props).

so as you can probaby guess i recommend the g90 if you are deciding between it and the saito 100. but if you want stronger performance then try a bigger 2 stroke. maybe a 2 stroke 1.20 or something like that, or even a moki 1.35 if they still make it. that p-47 would fly awesome with a strong 1.20 2 stroke. but i wouldn't advise the st2300 without running it myself.

i have run both the stg90- i have 6 or 7 of them, and the saito 100. i took the saito out of my hangar 9 mustang and put a g90 in it and never looked back. the g90 clearly outperforms the saito in a warbird. if you had an aerobat the saito has good torque/thrust but for a warbird th g90 is the ticket.

good luck skyking

ed