I just recently finished a project for soeone that "rigged" their Lokar shifter. they thought it was for a back up light. It will be difficult to do without the body being on the car unless you measure very carefully the distance to the dash to make sure it is not too close.
First, adjust the shifting linkage to where your best judgement of where it should be as far as the angle of the shifter. You don't want it to be too close to the dash. You will see the bolts on the lower side of the shifter that have elongated slots. you can loosen these bolts and tilt the whole mechanism forward or backward as necessary to find the corredt position. It may be necessary to readjust the shifting linkage to get it in the right position. Take care not to cut the adjustment rod too short unitl you make sure of where it needs to be. I used a multimeter hooked to the switch to let me know when it was right.
I hope this helped rather than confuse you.
Ed