Welcome to RFC!
Using a brass punch, drift the factory front sight out from left to right (as you look down the barrel). The new sight drifts in from right to left but you may need to fit the sight's base to the dovetail on the barrel. I do this with a small triangle file that has had one side ground smooth so it doesn't remove material from where you don't want it removed. Skinner Sights sells a file like this but you can easily make one yourself. Might even be able to put some blue tape on one side of the file. Don't "adjust" the dovetail cut on the barrel, only work on the sight base and go slow.
I chose the lowest Lyman globe, the 17AHB at .4", to go with my Marbles tang sight. If you use a receiver mounted sight like a Williams you may need a taller globe. I think the best thing I did was ordering a Varmint Express stock from Henry. I get a perfect sight picture every time with the comfortable, consistent cheek weld this stock provides.