So, with this kind of setup, the trem is set for dive only if I understand correctly. Wouldn't this be much easier to setup than a FR set floating? I want to know this because sometime in the future I am almost sure that I want to build a Warmoth Strat. I would like to have a FR on it, but not if it's as hard to setup as a floating FR is. I've also heard that the neck pocket would have to be angled.
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nah thats easy it works thats what eddie did! and i made a frankenstrat a while ago and i ddi the same thing and i dont know about the nut. Mines straight and i dive bomb all the time and it goes perfectly back into tune so idk.
1959' Gibson Reissue Les Paul
Gibson Alpine White Les Paul Studio
EVH Fender Frankenstrat
Jackson DKMG
Gibson les Paul Voodoo
Bugera 6262
Line 6 Spider III 75 combo
the neck pocket will need to be angled if you don't recess the FR.

Setup isn't that hard for a FR, plus once you do set it up it will stay fine for ages.
The neck pocket doesnt have to be angled, you can put a shim in there instead, which will angle the neck without having to get the neck pocket angled.