I bought a wildcat motor, so far it's pretty good. I did have some minor issues but overall they are okay.
The "upgraded speed carb" is not high grade. The mounting bolt in the front was bent.
The piston jug had a fin that was damaged. Now to their credit they did send me a new piston jug. And did offer to send me new mounting bolts.
Was this because i filed a PayPal claim..... Not sure.
Word of advice, never ever close a PayPal case at the sellers request!!!
I didn't use the sprocket but it seemed decent. I already had a heavy duty sprocket that was made with a lathe.