Bolt pattern in metric?

I have been looking around and like to get some 17 inch rims for my 67 Dart. I have the 5 on 4 1/2 bolt pattern.L.B.P. Anyone know the metric conversion on these?i heard 116.5mm? Also back spacing with out altering rear springs or anything else. Sorry if this is beatin to death but i tryed searching here with no luck. Thanks in advance.........BTW YAH! im in Canada.......Dam metric:protest: