some will jump in and tell you the 203 is junk and to get a 205. but for us with limited $ and that will not be doing hard core off road who think the 203 will do just fine here is my thread on converting your stock shifter to a twin stick. Only additional metal required is some flat bar for the second handle extension. Required a grinder or hack saw and basic welding skills. Takes a couple of hours once you have it on the bench.
kwmech, the stock shifter becomes junk when it gets worn, the lever will move the internal guts without disengaging the arm to the transfer. Look at the thread, lots of close tolerance bits that slip off track when worn.
http://67-72chevytrucks.com/vboard/s...d.php?t=360447