It seems everyone adding info here are knowledgable Sinar system users, so let me ask this. On my ebay hunt what should I be looking for when building a 11x14 system?

For carriers is there a special 8x10 carrier? or are the F Line, P and P2 carriers standardized to carry 4x5 and 8x10 standards?

I think starting with the carriers is a good place to begin building, or should I begin buy having the back made?