C30-7 Detail Questions

[GDDavis]

All,
I am thinking about building a couple of C30-7s. In comparing the Atlas model to photographs, it looks like there is a lot of work to do. I have a few questions for those of you who may have already tried this build.
The Atlas body matches appears to match early C30-7 grills and stepwell notches . Does anyone know which numbers are closest to this body shell?
Aside from the triple clasp brakes, which truck sideframe best matches the NS C30-7?
The roof latches look oversized to me. Is there a preferred replacement part for these? What about the lift rings?
Which Plano knuckle basket is correct? They have several sizes and I haven't tried any of them yet.
Does anyone make the correct dual fillers and other GE fuel tank details?

Thanks for your help.

Greg Davis