I Have an old cast Iron tub that I took out to repair some other plumbing?

When I put it back I found out the tub drain pipe is 1 off….It Is Not moveable cuz it hit’s the walls…I cannot figure it out…The drain in the tub is aprox. 3 in to the pipe….So I mean there is a 3 in clearance from top to bottom….A friend said to get a tub kit..That would work or do I have to make a custom pipe for the water to drain PUZZELED