Those higher wattage off road H4s can go in interstates (with dual relays) with no mods (heavier wiring or sockets). The fairings breath freely in there. I run Hella 80-100s in both interstates.
But not in Std/tourers without improved wiring (and maybe a socket). The std/tourer headlight bucket contains a lot of wiring, and heat can be an issue. At least that's what I've read/heard.
I have it in my Standard, not my Interstate. I think I have the 60/55’s in my I/S. The standard has about 30k using them with no issues. I did pick up one of those porcelain connectors to put in, but I haven’t as of yet. It probably would be a good idea to use a relay to save the starter switch though.