GM Performance 383 HT (high Torque) crate motor. Nothing on the motor is rebuilt it is all brand new strait from GM. It is 3 years old with 30. 00 miles on it. chevrolet. com/performance/crate-engines/small-block-ht-383. htmlThe tranny 4L60E is rebuild. It is a little over 4 years old with 50. 00 miles on it. it also has a Mag-Tech deep pan on it. The tires and rims are also pretty new. The rims (American Eagle Alloy 185 Rims) are 2 years old with 20. 00 miles on them. The tires (Goodyear Dura-Trac 315/70R17) 2 of them are 2 years old with 20. 00 miles on them and the other 2 are 3 months old with 3. 00 miles on them.