Hurst Indy Shifter
check out the pictures listed as links in the above topic. They are of a hurst indy shifter I modified with good results to replicate the original shifter. The handle is manufactured (same dimensions as original) but std handle would bolt on if you have one.
I have a scaled image of the backing plate if you need it which will allow you to correctly position shifter. Originally the supplied mount had it about 4+ inches forward and around 3 inchs to high. Absolutely useless. the linkage rods didn't need to be cut/welded but one needed slight bending.