I need help and advice on anything i might encounter when switching out a exhaust manifold on a 1996 honda civic hx, the old failed inspection b/c it has a leak, so i bought a new one and i am going to switch them out, i have a haynes manual. So i am just curious if i need any "special" tools other than the obvious, or anything else i should know....oh and on a difficulty level, 1=easiest, 5=take it to a garage, let me know if you can rate it!!!!!!!!!! thanks for all your help guys.