70's???
Nah to new for me. Similar to the Muscle cars of the 60's, sportsters heyday was the mid to late 60's IMO.
This bike is a 66 XLCH, and to answer your question, yes it only came with kick start in 66 even on the XLH. (67 was the first year to offer an electric start sportster, but only on the pedestrian XLH).
( There is a knack to starting it, even with the adjustable magneto, but once it fires it was one of the fastest production bikes of its time.)