I got a new lares 972 quick ratio steering box for my 1980 cutlass supreme , i was assured everything would work by a lares rep. I used this so I could keep my original power steering pump and flared end hoses . Everything works great except my intermediate shaft won’t slide onto the new box , the male spline is either to big or has more splines on it .im assuming it’s because it’s a pre 78 steering box . Is there an intermediate shaft that will work that anyone knows of ? If not I’m sending the whole mess back and starting over . I know the Jeep and Astro van shifts are a good upgrade but I’m pretty sure they won’t fit the new box either thanks