there's no need for one to go from the compressor to the inlet manifold - they're connected anyway via the rather larger air pipe.

just connect the 2 together, but if you have another hole somewhere, make sure it's blocked or the turbo will overspeed and fuck up.

post some pics of the cover thing, i have no idea what you're talking about.

you don't think you're being a bit ambitious here? i know you've got to learn somehow, but a bit of research before you started building all this wouldn't have been a bad idea.