i installed my kooks headers today. started about 8 and quit about 3. 2 of the bolt were snapped of before we even touch them. passenger side just the head of the bolt was gone. driver side was broke off in the head...had to go get a right angle drill and drill the bolt and use an easy out to get it. worked great. we unbolted the passenger side motor mount and jacked the motor up just enough to get the header in... didn't have to do both sides. driver side we took off the front drive shaft and they went up through thre bottom just fine. i have afew minor thing left to do in the morning...plugs and wires, cross member and resecure the ac lines. later in the week i will finish with the true duals. all in all...not a bad install at all.