better ask technician outside do for you..
this is a quite a tedious task..from choosing the right neck..fixing and bolting the neck..fixing the truss rod..to neck adjustments..
if you wan to do it on a genuine fender strat..better not..unless its a china or korea..or indo model..like squire..if not i suggest you dun do stupid things to ur fenders. if not, ur investment will go to dust...