Hope this helps.... Here are some notes I have from the now defunct Backdraft Boys web site and one thread here. I cannot vouch for the validity or correctness as these are just notes I have. From what I understand, you have to determine if your tie rods are straight or have a bend/cure in them.
Quick Power Steering Rack Options
"We found an application for the straight tie rods,they are for a 1974 Mazda Rx-3,found them at NAPA."
Defunct Backdraft Boys thread 1:
"Curved tie rod ends
Spicer Part Number 4011251"
Defunct Backdraft Boys thread 2:
"I spoke with mike regarding new ends. They were out so I went to Rock Auto and bought a pair, Mike agreed they were just the same thing as they have. Problem, after inserting the shaft of the tie rod into the arm, I can't get enough thread through the arm to safely tighten the lock nut down. It seem the shaft on the one that came with the car is longer even though they are both off a 74-76 Mazda with the same bent configuration. Any Ideas?"