727 cooler line fitting size

Like stated above the trans is also 1/8". I just ordered my fittings this week. I will be doing this exact same thing. The only place I could figure to run the lines is where the stock lines went. I did however buy a DEI heat sleeve to help with the extra heat running it by the headers.

I am however having a hard time figure out where to run the lines to the front for the cooler.