well its done now both windows on the off side are in and glued had more trouble with the second one than the first bit of over confidence probably.
Made frame for the door window popped the center hole through and marked the line to cut but as the sun was disappearing Ive left cutting and gluing till morning
found this is the best way to mark out the windows mark inside find the center and drill a small hole then transfer measurement to masking tape on the outside this way if it clashes with anything or you want to move up or down /left or right the hole is in the bit that coming out