I looked in the '07 V-Twin catalog for you. Those kick to electric conversion kits are no longer offered. But, I saw them once in there years ago.
Remind your friend that the Knuckle and Pan motors were designed with a shorter stroke than Sportster or Shovel. The Knuck and Pan motors are the only ones made to start while you are sitting astride the machine, never
hanging off the side. I know it looks "biker" and all that, but it's bad for the kick cover bushing to be jumping up and down on it, plus when people see someone repeatly kicking a machine to death with no positive results, they like to yell out "Hardly Ableson"
and that's never good..
He should probably consider rebuilding his motor to 74" and enjoy the non-effort of starting the motorcycle like the founders intended. Or, buy a Shovel or iron-head Sportster. They're both really good at separating your knee-cap. You might even get a permanent limp, if you work at it. I can't think of a better machine to get hurt starting, than a '71 XLCH
(worked for me
), or the BSA B-33
, 500, single. Or, missing a kick-through on something big inch will do the trick too.