I'll say one thing--Patrick 66 REALLY knows engines. To acwhite, 53 was the last year of the Buick straight eight, 54's were all V8's darn it. These old inliners were used on irrigation pumps, saw mills and on oil rig sites in numerous ways and were granite solid old engines. So many good ones, and who can name the really sorry ones along with their "good" choices. Do I hear 4-6-8 Cadillac?