Engineered to fit all GM LSx engines - Compact design allows for easy storage for any LS engine -Fits All LS series engines such as LS1, LS2, LS3, LS7, LS9, LM4, LM7, LQ4, and LQ9. Built in hardware storage for engine mount bolts while stand is not in use ensures you will always have the proper hardware when needed Premium steel construction for superior strength and maximum hold Not compatible with 1955-1957 265 and 283 SBC engines since those engines do not have side engine mounts Rolling engine cradle stand is engineered to fit your engine- Pick the right cradle that fits your Engine Engineered to fit all GM LSx engines - Compact design allows for easy storage for any LS engine Fits All LS series engines such as LS1, LS2, LS3, LS7, LS9, LM4, LM7, LQ4, and LQ9.