I have a 94 C1500 ecsb, with a tbi 350, 700r4, and 3.42 gears, plus a towing package. I also have a 86 k10 rclb, that im pulling the motor and tranny out of. im sure its atleast 300 pounds less than stock, due to rust. plus another maybe 800 without the motor and tranny. i have a 16ft tandem...