Hey guys im new to the Buick Grand National stuff and came across a motor at an auction and well I had to buy it. Now im trying to figure out what this motor is all about. Here are some things I CAN tell you about motor. 4 bolt main caps -bearings are brand new. Aftermarket crank and rods. GN-1 aluminum heads with shaft mounted rocker arms. Its has an aluminum intake but no carb or fuel injection on it.Just trying to figure out what this motor would have been built for, and what I need to put some fuel to it.