The Borgenson PS box is quite a bit lighter than a factory PS box. I tried to move a couple of factory PS boxes the other day and just about busted something. Those boys are heavy. The Borgenson box is only 24 lbs which is heavier than a manual box but isn't terrible. The PS pump weighs a few more pounds so I'm probably adding 20 lbs to the front end with the swap. I did pull the cast iron manifolds off this time around and replaced them with tri-y headers so I'm guessing that the total weight will be roughly the same. I swapped the heavy 11 inch rear drum brakes for disc brakes last year and that saved me some weight. I'm also in the process of removing the entire center gauge panel which was fairly heavy. I don't need it anymore now that I have the digital dash installed. So I might actually be dropping weight when everything is totaled up.