740 inner tierods

Any way to tell what size inner tie rod ends you have without pulling apart and checking want to ordernew inner and outer tie rods for my 91 745 non turbo and got a couple different size options to choice from
Thanks
Jeric

You can tell what type the rack is from the boots. A ZF rack uses rubber washers for the end of the boot to clamp to. The CAM type rack uses clamps directly on the tie rod. There is also a data plate in the left rear door with the codes for what equipment the car came with.

Looking at data plate helps. I would look directly at the steering rack(it will say zf, trw, koyo,etc). Steering rack could of been swapped so this would the sure fire of knowing and being able to order the correct parts.