It sucks when unexpected car troubles tap into funds designated for other purposes.
Just be glad you are not building a performance engine. The estimate to build my Pontiac 455 is in the $9000.00 range.(I'm supplying the main block.) Then again you can't stick a price tag on an estimated by computer modeling 800 Ft lbs of torque and 750 Horse power while being naturally aspirated running on 93 Octane pump gas.Now all I have to do is sell my old house to get the money for this than raise up another $20K or so
to do the rest of the cars frame off rodstoration.