348, Muncie 4 speed, 3.36 open diff. Here's the story: Guy bought this car new in Nevada, drove it a few years with the OG 6cyl & Powerglide. Got tired of that & went to the local Chevy dealer and purchased a 348 & Muncie M20 4 speed over the counter. I'm told this was 1964. Guy drove the car this way until he served in Vietnam where he was killed in action. Car sat for years until it was sold by the family. Odometer shows just over 46,000 miles. After the car was sold, all brakes, bearings, bushings, & shocks were rebuilt/replaced. The same engine & trans that were installed in '64 are still in the car. Runs & drives very well. We drove it 3,500 miles to Canada & back last summer with no issues. Body has all original panels & paint (what's left of it). Interior was freshened up when suspension was rebuilt and is in good shape. Being in the desert most of its life, this car is very clean. Minor surface rust in a few areas, but overall a very nice body. Still has manual drum brakes, generator. Intake is aluminum GM 2x4. Flowmaster mufflers sound good. $18,000/OBO. Feel free to call or text with questions. I have a bunch more pictures & some video of the car. Scott 9703243698