I'm still in search of a known OE 170 in a '68-'69 base V100-170 series car,the newest casting I know of is the"246" series that was around in '64 and I don't have a definitive yes or no on a parallel update in '68 w/ the 225.
I don't grasp what it is you're trying to find (or find out). There was no "170-series car" in 1968 or '69; the last year for the "Dart 170" model namewhich, as you know, had nothing to do with the engine size was 1966. Last year for US/Canada availability of the 170 engine was 1969; it remained available after that for export.
Are you asking whether the 170's crankshaft rear counterbore was enlarged for '68 like the 225's was? If that's your question, the answer is yes. If that's not your question, please try asking in different words so I can get it thru my thick skull.
