[RC-Monster Mike]

whew, there is a lot happening here! The bulkheads were updated to the design you have. The new design is better(stronger), but I must have the old picture. The front bulkhead is similar in design the the stock rear, except it has built in kick-up fro the front suspension and skids. The bulkheads do come with the needed hingepins as well. Please make sure you are using the correct ones. I recently built a truck for another customer using those bulkheads and the included hinge pins and had no problems. I would guess the RPM arms may have to be trimmed to fit, but the hingepins should work. Perhaps you mixed up the front and rear hingepins supplied in their respective packages? Please double check this for me. I suppose it is possible that they were packaged with the wrong hinge pins, but I have used a few sets and the included hinge pins without trouble, so please double check.