Yes, this thing is heavy and YES my lower back has been killing me but this was a toy worth carrying all the way into my living room. The box currently is taking up my whole living room which you can see here but we don’t even care right now! We cannot believe how heavy this box was but thanks to Vortech supercharger kit with all the bells and whistles. We cannot wait to get this piece of machinary on the Nissan 350z VQ engine. The motor will be at 400+ horsepower with just this single part. We cannot wait to have this installed and it’s coming very soon.