Man, I own 3 guitars, a bass and, a drum set, but I wouldn't blow up a car to get back at the guy who stole your bass. And why do you even know how to make a bomb?
first question do YOU KNOW if he still has the bass?? can you send a spy? and WAIT! WAIT! a good TWO months in planing to fack the dude up! think it out slowly. And I know how it feels to get robbed and since i play the guitar I would wannt to get back at him!