Mammoth 1/8 Nitro Gas RC Truck 4WD Thunder Tiger big block

This is for a Mammoth Nitro Gas RC Truck 4WD... Scale 1/8.. some one told me that the motor is a Thunder Tiger .71... It's missing a little piece where you put the stick to crank the engine, but it's nothing major, it's like a $5 to $8 to buy the part new, you can still crank from the fly wheel... It runs good and the motor have a lot of compression... It has a big block... It's missing a little piece on the top of the engine as you can see in the picture... Any question feel free to contact me, Thanks!!! it has a lot of aftermarket part