Cool project. I did some cutting and splicing on some Mustangs this last year.
I made a 69 Boss 429. (never kitted)
A 68 Shelby GT500 with a real 428CJ and an engine bay from a 67 Mustang. (the original AMT bay was HORRIBLE)
And lastly, a 67 GT drag racer with a mini-tub job and a 427 SOHC motor stuffed in it (quite challenging)