Yanno .. friend of mine had one o' those in that dark metallic green long ago.
Met him when he came into the speed shop I worked at in Victorville, CA.
He said he wanted it to go fast.
I told him to stuff a Rat motor in it, best bang for the buck there was, then.
He refused, spent a couple grand on that 350 instead.. cam, pistons, intake, carb, headers an such.
It picked up 3 *tenths* in the quarter mile.
Well ..he was 'disappointed' so I offered to help.
We got a 2 bolt main 396, big port heads, 11.5 to 1 pistons, real nice solid lifter cam setup for 5500rpm redline,
balanced, printed, tunnel-rammed with two Holly 750's (the ones Holly used to make for a tunnel ram)
We put a 4.88 12 bolt rear in it.
I told him to go with the cast iron T-10 4 speed but he insisted on the Muncie.
Muncie's are great if you have no horsepower or traction .. if you have either of those they split right down both sides ..which he did in his first race,
..then we got that cast iron T-10.
The car was an animal.
First time goin up an onramp onto the freeway, right after we got it running ..
..120mph at the 'merge' and he had to brake hard to keep from eatin the car ahead ..it kinda caught him by surprise.
It was *fast*

We lined up one evening from a 30mph roll .. he just blew my lil Duster's doors off.
Tuff to beat a good breathin Rat

-GE aka Frank (Duster was a tunnel-ram solid lifter 440 car w/4.89's and an 8" converter back then)