Look Darlin Mr. Bowtie appears to be a Chevy Man. Now I really hate him!
It is your car so build it anyway you want. I have a Hunter Cobra with Corvette suspension and a 5.0 Ford. On the resale market for Cobras Non-Ford Motors bring much less than Ford Motors. I have even heard that some Mild 5.0 Ford motored Cobras bring more than a Big Block Chevy powered Cobra. Now if you already have a motor then by all means use it.