I have Alterktion on my Demon. Weight transfers just fine. I shortened the lower control arms 5/8". Car was only 45 pounds lighter when I installed the Alteration kit and switched front windshield from glass to Lexan. Car had a Wilwood lightweight brake kit with the stock suspension, and the Alterktion comes with a medium weight brake kit. No way you can lose 120 pounds. The whole stock K-frame with control arms, brakes and gear box does not weigh much more than 120 pounds. However the front tires last about 3 times longer with the Alterktion.