Gee, you could look at the way the old one was set up and copy that but if it's worn a lot it might not be all that close. Then again, you're only looking for a short drive anyway.
I remove tie rod assemblies and put them on a board. Then I drive a nail into the board and set the end of the tie rod against the nail. Then I fit another nail at the other end and pound it in while adjusting it so that the whole assembly will just fit between the nails.
Take the new assembly ( you are using all new pieces, right? ) and adjust it so that you can just slide it through the two nails. Lock it down and install. In most cases you can drive the car without any tire wear at all and certainly far enough to get an alingment.
