The little 1.6 unit in the focus is such a restrictive engine, there is no re-build information avaliable for these such as tourqe settings etc as ford designed the bottom end to be a throw away part, if you need a re-build you buy a new bottom end. Dont bother seriously, the 1.6 is the worse base for an engine build, the gearbox on the 1.6 is really bad, to handle the power you need the same gearbox fitted to the 2litre which will not fit your engine.
Start with a 2litre engine then
Fit a decent clutch
new pistons
new rods
new exhaust manifold
inlet manifold
managment
intercooler
uprated brakes
etc etc