Jap front for Tri

I am building a Tri 500. wanted to do jap wheels on it since from my understanding they are lighter, come with disc brakes, and I think will be easier to get cheaper. Don't have forks for the bike yet and was going to make a trip to a local junkyard to see if there are any acceptable donors. Are there any particular bikes that match up well with Triumphs? What mods should I make? Other ideas or nasty comments about mixing jap and triumph?