Need help installing new muffler

[RookieLibertyist]

ok guys im not the most handy of people so i need help to figure out most things so here we go:

i wanna buy a thrush glasspack and new tip to put on my libby. its cheap and from what ive seen so far fairly easy to do. therefore does anyone have a diagram or video or something that can help me to install the glasspack and if there is anything extra i will need.

thanks guys