Seriously, if u want a floyd on a strat, go get 1 with a floyd already fitted. The cost, risk, time involved is simply not worth it. And if u really wanna do it, get Kahler USA, Gotoh or Ibanez EDGE or ZR bridges(if available). These 3 are the more reliable ones that dun go outta tune so easily and are smooth. If u are considering getting a new guitar, go for 1 with either of these 3 bridges, it's the safest route. Jus my 2 cents.