Car came with no motor. Built the subframe/trans mount/torque arm/etc myself. Yes, I believe it was worth it
LS1 motor. GT45 Turbo. 456 RWHP untuned with stock injectors, tires spinning @ 8 psi.
Ran an 11.35 @ 123.7 mph tuned, bigger injectors, @ 12 psi
http://www.youtube.com/watch?v=Qe7VyIxSCQg - dyno
http://www.youtube.com/watch?v=VmCJepfGFf4 - 1/4 mile