I am looking for a complete Engine to put back in my 2005 RXP...

What was in it was a SBT motor that still was running but i tore it down for the winter because of metal shavings in the oil filter so i tore it down and found 2 bad rod bearings and a timing chain that was about ready to snap! Now im ready to buy parts to put it back together and The total bill for parts is getting pretty high and im thinking that i might just be better of going with a used engine... So far im having to buy a Complete Gasket Set, Rod Bearing Kit, Main Bearing Kit, Counter Balance Bearing Kit, 3 Piston Ring sets, Flywheel Cover Gasket, Strech bolt kit , Thrust Bearings, Rod bolts, Flywheel Bolts and im at about 80 bucks plus Shipping already!

Can anyone help me? Any Advise?