That looks cool, Cannibal!!! 
I want to do a mock up of my car, but I haven't been able to find any '72-'74 Challengers around town. 
Have you tried any hobby shops?
If you look further up in this thread the Challenger I made is a '73 but I didn't put on the bumperettes.
It's made by ARII, 1/24th scale, opening doors and hood, slotted rims and stock (Not that good looking). Engine and interior detail is so so but presentable. Sells in Hobby stores for $25-$30.
There are 2 versions that I have seen. I have both. The early one I bought about 20 years ago comes with an electric motor to power the car and the associated wiring/contacts. It also came with very realistic aluminum finished slotted rims with really nice real rubber tires. The newer kit no longer has the electric motor but has provisions for it. The slotted rims are now chrome and the tires are more on the plastic side.
Here's one on Ebay but the price is a wee bit higher at the moment.
http://cgi.ebay.com/73-DODGE-CHALLENGER-MADE-IN-JAPAN-1-24-SCALE-MPC-SMP_W0QQitemZ180034457368QQihZ008QQcategoryZ2585QQrdZ1QQcmdZViewItemThere are other vintage '72-'74 Challenger kits on Ebay but you'll pay a lot more for them than this ARII kit since they are usually much older.
