Too much to list but there is a small fortune invested in this vehicle. It was owned by a Ford technician for the last 20 years of its pampered life. The original 351 Windsor has been bored and stroked to a 408 with a mild cam. The entire drive train has also been gone through and beefed up with no expense spared. All of this was done about 40,000 miles ago. Please see the picture with the list of modifications. This Bronco was featured in a 4x4 magazine several years ago when the build was completed. It has also won multiple trophies at various shows. It has been several years since it was gone through and there are probably a few minor issues but it runs, drives and looks great! please feel free to message me with any specific questions or call me at 262-305-750zero