FWIW we've a ton of these things, both with and without turbos and to individuals and also to other vendors... for nearing a decade. Don't recall ever being told "it should also include this" or the like, so it would seem what we have been providing is doing the trick. All said there is always something else one could need during install such as vacuum lines, water pump, motor mount, etc.; but you have to stop somewhere otherwise the kits cost would sky rocket really quickly.
Rob, do you have a list of all the parts the kit should include for a normal swap?