I read your post with interest as I planning a 30-06 as well.
It will be the second custom rifle for me. My first was a 375 H+H magnum with a pre'64 action.
I hunted in South Africa with it last year and the year before taking 14 different species.
I used parts (barrel band swivel, barrel band front ramp) from Recknagel and I think the NECG parts are from them as well. You can check them out at www.recknagel.de If you email gabi.recknagel@recknagel.de they will send you a mouth watering catologue.

The plan I have for my 30-06 is a colour case hardened pre'64 or Montana rifles action and a stainless damascus (yes damascus) barrel, check out the barrels at www.damasteel.biz/firearms
Probably no fixed sights but a fancy dual dovetail mount system I'm still working on.
Good luck.