NEED A KA24DE!!!!!!! for a 91

yeah if anyone could help me find a 91 ka24de engine for my 240sx. I belive the engine is bad because i bought it used off of ebay and there was a knock in the motor and i ran the rpm to high then the next thing you knew it dies out on the road. I think the engine lock (at least that what my mechanic told me). it's either i buy a used motor or have my mechanic rebuild it. i dont know what to do?

So if anyone could help me that would be great!!!!

i live in San Antonio, tx

Am I the only one who didn't understand one damn word?

Invest in Hooked on Phonics you helmet-wearing retard.