well i had to remove the alternator for the manifold to clear. I did not remove any axles either. I used long extensions with a wobble and placed the extensions (coming from rear of vehicle to front) between subframe and firewall. if you look from back to front under the car youll see that its almost a straight shot to the top nutsof the manifold. and you could also do the 3 lowers if you want. easy as cake in a box.
if you need more clarification let me know i just did it less than a month ago.