Need engine advice for a Kyosho Pitts .40.
I have one to finish also. I plan on using a Webra .50 on mine. You might not be satisfied with a .46LA. Not really enough performance. A .46 FX would be much better. I wouldn't worry about O.S.quality. O.S. makes an excellent product. A .50 SX is probably an even better performer than the .46FX.
If money isn't an issue,a saito .56, .65, or .72 would be good too...
MDS might require caution....