Yes, a 3.3L Nissan SD33. They had a turbo SD33 like mine in 1980 only. Its the same engine AMC put in CJ10 towpigs for the air force, which were a mixture of turbo and non turbo, and AMC also put it in a few motorhomes and a small number of Australian and Japanese export full size Jeeps. If AMC would have put a diesel in an Eagle, instead of a conversion company that did the 1980 ones, they would have used an SD33 in my opinion. It is nearly identical in dimension as a 258. I put alot of information in a project thread and another diesel eagle thread here on the nest. Mine came with an extra engine and I will be buying a specially converted NV4500 to install it in an Eagle, once I find the bellhousing parts. My Scout has about 140 HP and gets at least 30 MPG.