Welcome aboard.

Hopefully you haven't bought the block huggers yet, you may find the stock manifolds will fit as well or better. Looking at what others have done may or may not be as helpful as it would be guessed. Part of what determines where the steering components go is how you set up the steering column to fit your comfort. You don't indicate what your rod building experience is, so you may already know all of this. Personally, I often warn against, as one example, planning on using a tilt column to make up for bad placement of the column. You may also find out you'll have some difficulty with pedal placement, especially if you go with a clutch, for both steering, and exhaust routing. Best to have all the components in hand before getting too carried away with buying components to deal with issues that may or may not prevail.

Good start you've got going so far.