Other than opening up the barrel channel the Vanguard will drop into the Alpine/Bansner stock. If the Vanguard is a youth model it should drop in.
I used a heavy grit sandpaper to open mine up. It's still easy to go through the outside layer of the stock, but I've noticed no ill-effect. This picture shows the 2 areas where the channel was the tightest:
It's worth it. Before pic with the Vanguard factory stock:
And with the Alpine stock:
With an early GPO 4-12X40 in Talley rings: