Hey, I started looking around for driveshafts when I snapped my MST monster truck shafts. I bought the metal replacements, but they twisted after awhile. So anyway , I went on AliExpress, and they have tons of options on there. Shipping takes Forever ! But they usually have better than stock driveshaft options. The ones I bought were splined shafts, they work great. The OEM replacements had pins in them and started twisting as I abused it. On 3s battery. But yea, give it a try. I’m sure someone will come on and have a different opinion, I’ve learned in the past.
Good Luck .