Hotrodpaul you are at the place that stumped me,the EG and D 7 7 would be Chevelle correct for 67-68 but the fact that it's a 854 block cast in early 67 is what through me?I also swear the stamp is IEG and not 1EG.It does have the big cooler outlet above the filter so im sure it's a 4 bolt but even if you forget the front pad the D 7 7 casting on a 854 block seems waaayyy early!