I know they made millions of the 2 doors as well as the 4 doors
He should starting looking for the 77-79 Impala 2 doors with the wrap around rear window, buckets and console.. those are cool and a bit more rare than one of the common caprice's
If hes not stuck on the chevy(other brands on same platform) the olds 98/88 are the second least rare followed by the bonneville/catalina then the least produced was the buick lesabre/electra
Big cars are cool
And i think 85 was the last year of the two door caprice.......