Blooz, I did have to do a little routing on the bass side. This IS a Squier Strat and not a Fender MIM Strat, so there may be a little variation there. But, a little routing and it dropped right in. The only problem, and it may not be one, is that the steel block sticks out the back of the body. I can't put the cover on because of the steel block.
I may just leave it like that or try to engineer a cover with a shim around the edges to give it enough clearance. The sustain does sound better! I'm still trying to get the action like I want it, but I'll get her there.
Overall quality of the trem kit does seem to be very good. Maybe a MIM or MIJ Strat body is a little thicker so the protruding block won't be a problem.