Star - The Bullets will work in depth and mounting hole diameter but your cans will need 4 new holes for the screw pattern of the Bullets. The Hollow Points mount with 4 screws vs 6 screws for the JL 7.7. This is a very simple procedure and you will be More than happy with the performance of the Hollow Points over the JLs.
Notice the different pattern of the screws:
The Hollow Point 770 Retrofit kit should be your most economical option if you already have the OE cans. The alternative is going with the MC mount option (what year do you have?) and going with new cans: