I swaped bridge pick up on my Epiphone LP with SD P-Rail and Triple Shot and it feels like a new quitar
Love the options it gives you, feels like having 3 new quitars
For instalation and options, there is comprehensive quide on Seymour Duncan web page
Pros
Easy to install
You get 4 different pick up options
Looks great
Cons
At the time i bought it, having to buy both rings felt like a con, but at the end it turned out great, since i also swaped bridge pick up in my Fender Mex Strat
Love this product, recomend it to anybody, beginner or pro musician