Hi Rooster513,
I'm currently building the AM SBD-5. In my research for the kit I found that pre-war SBDs 1-3 didn't have the shoulder harness for the pilot. Shoulder harnesses were only installed after the start of the war. It's in one of my Squadron SBD books, either the Walk-Around or the In-Action book, can't remember which. Unfortunately, the Eduard PE sets only include a lap belt for the pilot. The gunner can't wear a shoulder harness because of the configuration of his pivoting, swivel, turret style seat assembly. If you go back a couple pages in the aircraft forum you'll find a couple of my posts with some photos of my SBD-5