I narrowed my CTO (Center Take Off) which I think came out of a Celebrity or a Cavalier. I took an inch out of each side in order to clear my frame. I chop-sawed the rack on the left side and machined a new shorter cover out of...... yup, billet aliminum. On the power steering (right) side I shortened the piston rod and cover and welded in a new fitting and end cap. I then made new tie rods out of 4130 tubing with Heim ends after drilling and tapping the rack for SAE threads to eliminate the metric tapped holes.
I looked at several other rakes prior to picking the CTO and wish I had found a manual steering rack instead of power steering. The hoses and requirement to have a pump basically do little on a light car other then cost more and required more fabbing for brackets, etc.
On a more convententional style rack, it looks llike a matter of replacing the tie rods unless the rack itself needs to be narrower. When I looked at those style racks I thought the best approach would be to machine and heat treat new inner tie rod sockets in the rack and then fab new tubular tie rods either with Heim ends or tie rod ends.
My CTO rack may prove to be a poor choice on a car with a dropped tube axle due to the potential for bump steer. It would be a better choice on a car with independent front suspension....... time will tell as I'm a year or more away from the street with this thing.
It's cost to the tenth power and time to the twentieth power.