Does not matter if it was a truck motor or if it has speed or if it's hard to fit. It's looks, the fact you can say it has a 409 in It, is way more desirable. What other motor has a Beach Boys song named after it? Are you kidding? A 409? Dual Quads? Do it, she's real fine. Giddy up!
P.S. Very valuable $$$$$$ motor. The "nostalgic effect".
Exactly. I would absolutely put the 409 in instead. The w motor is unique and I am putting a 348 in my '48. I built my own mounts and it was a simple install. They aren't cheap though, so expect to pay more than a SBC will cost you to put together.
Check out my build and motor.
http://67-72chevytrucks.com/vboard/showthread.php?t=592642