Problem with replacement Idler Arm

Yes.

If you go with a small spline steering box that is 1972 and down you will need the 68-72 and down centerlink, 68-72 pitman, 68-72 idler. The tie rods will need re-adjustment but will work for both setups.

While you are at it, check the K-member to see if it is a 73-76 spool motor mount type vs the 68-72 biscuit motor mount type. Was your car originally a /6 but now a V-8?

Do you have large bolt pattern rims front and rear?

Ok, its good to know that the tie rods will work but need the adjusting. I already have the pitman arm and obviously the correct idler arm but the wrong center link. I cant seem to find anyone that sells them. :wack:
My car was originally a 318 car but Im not sure what the difference is with the motor mounts?!?!?!?!

I have LBP front and SBP rear, I believe the rear end was swapped into the car. I have a set of new axle shafts coming with the LBP.