I have a 70 Blazer and I want to do a shackle flip but I know they only make the ones for the 73 and up blazers. Is there just a difference in the mounting hole locations or is there more to it? Could I just cut the old hangers off and weld the shackle flips in place without using the bolt holes with a mig welder? If I just weld the new ones on would i still need to remove the gas tank?

