Mack R model ten wheeler dump

[Lmackattack]

I kinda got lucky with the amount of angle....If I moved it any further forward between the axels it would come into contact with the top of the forward tandem axel and then the box in the lowered position would have to sit another 5mm higher off the frame. If I placed it in front of the forward tandem I would not get as steep of an angle I think it was under 45 iirc...I want this thing to dump and it all slide out. My next hurdle will be an automatic tailgate lock. I want it to release as the box goes up and lock just as it lowers.. I have an idea but want to mount the bed first...