Throwing around a couple dangerous ideas!

just my opinion, but this will probably not go as planned. in the end youll have at best, an early barracuda thats hacked up, well over your anticipated budget and few will understand the apeal and a beautiful charger thats no longer original.
At worst, two cars sitting in the backyard under tarps, too far in to go back, to far back to go forward.
Monetarily speaking, youll be upside down & total value loss on both, probably divorced and perhaps even kicked out of the country by your nieghbors...lol
ymmv :)