when I replaced mine to save time I unbolted the intake manifold, removed the gaskets with the manifold and everything attached and just propped it up by sticking a 2 by 4 piece of wood where the gasket would go, it gave me enough room to take a pair of pliers and get off the old clamps, than I used a new piece of hose with new good clamps and a small ratchet to tighten them... I than removed the wood, re-inserted the gaskets double and triple checked that everything was in its proper place, and bolted it all down, torqued it to specs and its been fine ever since, it took a total of about 35 minutes I didn't even disconnect the alternator I just unbolted it and set it aside. I hope this helps you speed things up, although if you have unmatched ports (PI Intake on NPI heads) than your going to need to pull the whole thing and rtv the water ports. If its port matched this trick will work for you.