I just received an xb8 , i was previously planning to convert it to electric but changed my mind afterwards.

How good is it compared to the latest cars?

Its my first nitro, got around 6 electric cars.

I need help with choosing an engine for it.
Here we drive in a really small parking lot.

I found an engine on ebay for $80
SH .21 pt21-p3 i guess its 3 port.

Is it worth it? Remember 1st nitro.
Or should i get something more decent like a hyper .21 4port or even 8 port?

On clutch assembly can i go on an ofna lx2 assembly? 14t?