cab seal question

[danman987123]

Is there a weatherstripping that goes around the door frame and seals when it hits the cab as well as one that is on the cab. I know of the one that goes along door frame but what about the little lip on the cab? if you notice on this truck built by fesler http://www.feslerbuilt.com/1968Chevytruckpur.htm it has rubber on the cab lip....and none on the door.......but if you go to brotherstrucks, ecklers, or earlyclassic, they all sell you door to cab seals which mount on door? HOW DOES THAT MAKE SENSE.....I CAN GO ORDER FROM THEM AND LOCALLY I CAN BUY THE RUBBER FOR THE LIP AROUND THE CAB....BUT WHICH IS THE PROPER WAY??