guess it depends on what your plan is....you don't need a fuel pump, injectors, etc., but more fuel is a good piece of mind. comes down to what you wanna do, if you pick one up that is supposed to make 6 psi (base kit), it'll come with everything from kb to bolt on and make that 6 psi safely and reliable,...swap pulleys to make 10 psi with no other changes, kiss the headgaskets goodbye, unless you made appropriate changes in other parts of the system, ie, getting more fuel in. there I'd recommend picking up some studs/nuts to replace some of the included hardware (hex bolts), as it will make it easier to install. boost/f.p. gauge are nice to have as well.
check out lasotaracing.com, in the tech section, real good, reliable KB info.
old pic enjoy...
[/IMG]
for what its worth, mine makes 8 psi, and the only thing i've done is put in a 190 fuel pump, still got the fmu, 19 lbers etc, timing at 10....i have plans for the picking up all the good stuff but I'm not home enough to get around to it...haven't event driven my car in the last month.
maybe some more info on your intentions for a more accurate response ie. opinions on parts...good luck and have fun