Exactly, that's how Exdelayed did his. That is the best way as is has the correct subframe, trans, harness', and all the other odd ball parts you'll need.
Junkyard MTX car wouldn't be that much at all, especially one smashed from behind.
2005 Ford F150 SuperCab FX4
1964 Chevrolet Impala SS
1998 CSVT: 354HP/328TQ @ 10 psi, now gone