watch your grounds i just put a 2 inch in my 97 5 spd 318. 4x4 only had to watch the tail light and motor grounds there short and you need about 3 inches to install the pucks other then that i didnt even change a thing. your shifters are a little bit lower but thats no big deal they hit the dash in 3rd and 5th anyway.
I have a 1" BL on my truck. Just count the number of mounts you have and order the pucks from Summit. Go to your local hardware and pick up some 1" longer bolts. For the stock bumper I just got longer bolts and stuck a 1" piece of square tubing between them to compensate. You can see the puck in this pic.