Need to create a STRAIGHT line of screw heads on my P-51

Ok, Thanks guys.

Hmmm:

Try this , Take some real good thread ( maybe silk ) and soak it in Aleens Glue or Elmers , now squeeze out 99 percent of it . Wrap it around the model where the line is going to be . After it dries drill your holes or make your indents and mount the P.E. or whatever .Now remove the thread . A nice straight line of screws or rivets and no damage from the jig !

I am not so sure the screw heads should be in line.  Dzus fasteners do have a fixed direction, but not too sure about screws- I have my doubts.  Thing is, it may be hard to find which fasteners are screws and which are Dzus.  The easy way to do the Dzus is PE.  There are PE sets for some of the larger scales- not sure if there are for 1:48 or not, but if available they are the easy way to go.