Are Tuxing/Yong Heng internal parts interchangeable?

They use twist connectors, I pulled those all out and soldered mine. Fires up super strong!

I believe hawk is right about the capacitor.

I also believe the rods and 1st stage pistons are the same (though there are 87 and 89mm rod variants for just eh yong heng, so measuring would be important. 



I believe the 2nd stage piston is different. But not %100