99 deville pos. cable follow up

thanks for all the feedback , now a couple of questions on the intake removal , if i remember right i saw either 6 or 8 -- 10 mm bolts are these the ones i need to remove and what about the fuel injectors , they stay in the manifold ? do they have to be disconnected , will i have enough slack in the wiring to move the manifold to get to the starter bolt , does the intake have gaskets that will have to be replaced ? thanks again -- i plan on doing this myself before it gets much colder ( live upstate ny )