He's asking what needs to be done, NOT your opinion...
Steveo;
For a 5K you can bolt it right in. You can use your 4k intake manifold but a 5k one would be preferable as they have bigger ports.
For a 7K-C (carburettor) you'll need to modify the sump to clear the X member, and use both the 7K intake and exhaust manifolds due to the bigger ports.
For a 7K-E (injected), mods to the sump and use manifolds as above. As well as needing the computer and loom to wire it up. Then convert to an EFI fuel system (pump, regulator, etc)