Bike Mielec

just have few questions then I will be in most defo;

1. Do these have rear brake drilling? Can wishbones have that? or is it either Wishbone or brake bridge?
   
   

This is how I understand it, yes.

1. Is T1 in diagram above effective top tube?
   
   

Yes.

1. When do we have to pay for this? Before/after pay day?
   
   

Not organised yet, this is still in the organising stages and I don't think anyone has taken on the responsibility of handling the order/money...