Turnouts and Wyes

[mikec069]

I'm trying to do a sectional layout of someone else's flextrack plan.  And to add to the challenge, the original plan is for N gauge.  I'm using HO.  Anywho, my question is this.  I'll probably need like a #5, #6, or a Wye turnout, to move through the ovals.  I have some standard turnouts but I'm going to need those for other parts.  I know the#5 turnouts require breaking off a part of the roadbed to add track to the after switch ends.  Is the same action required for the Wye pieces as well?
And on a slightly different subject, what sizes are in the assorted pack (44592)?

Thanks two you all.
Mikec069

Remember 2 + 2 = 5
for sufficient values of 2