I doubt if anyone here has done such a swap to give you a straight answer to your question but even if you have the capability I doubt you'd save any money. IF you can get a front clip for $5k or $6k would that also give you the 5 speed transmission?.... how 'bout the wheels?.... rear end? ( I assume the rear end is upgraded in the C but I may be mistaken) and again, there's a lot more to a "C" then JUST the hemi. I would wager that once you are done, you'll have at least as much money invested as what you could buy a "C" for; plus all of your time, headaches, etc. Plus you will not have ANY warranty - - PERIOD - - you can buy a 2005 "C" and get the remainder of the factory warranty... Now all this might be worth it if you could save substantial money, but I guarantee you are not going to. In addition once you have a 300 base with the hemi, the rest of the car is still gonna be a base model. Kind of reminds me of a kid I know that wanted a 5.0 mustang SO bad.... my brother had a really nice one for sale for $3000. The kid thought it was too much so he bought a 4 cyl for $1300.... then bought a donor t-bird 5.0 for another $600..... by the time he got done he had WELL over $4000 invested, and he didn't even have the 5.0 HO, just the grocery hauler 5.0!... Meanwhile the kid that bought my bro's factory 5.0 was driving his......