you don't have to do that if you mount the striker as far as you can towards the center of the car due to how the hinges are placed relative to the latch location. http://thefactoryfiveforum.com/showt...-Thread/page20
I'd read the entire page, back and forth with several builders etc... Aloha818 and I finally got what I think gives the best soln, see video at post 784, you can do them w/o cutting a chunk of door or relieving the side panel skin for the latches
I would also second reading Wayne's tips, really helps to locate the latches illuminating from behind. Like most of the areas of the car using the thoughts, tips etc from others helps immensely, couldn't build the car w/o the forum