as the old one looked to be a shifter that had been cut down at some point 
and so nothing really fitted to it.First took off the plastic cover by undoing the 8 screws, 4 either side, and also undid the old knob
was a bit crumby down there, lots of dust, hair (dog!), glass (car was a Cat C one owner before i bought it) and general bits of crap so cleaned all the underneath up, then proceeded to undo the two 10mm bolts (would be only 1 on a regular shifter) holding the linkage and current ebay shortshifter down from the shaft (giggidy)
Once that was off an loose, i took off the four 12mm bolts holding the shifter platform in place, which meant you can lift it up and around to a certain degree. again i cleaned up all underneath as it was pretty rank.
next bit was quite fiddly, getting this 10mm nut and bolt off
as you have to hold one end with a spanner and use the ratchet on the other end so it doesnt continue to rotate, otherwise it wont come off - the bolt faces towards the front of the car like so under the shifter
once thats undone, it just pulls out of the adjacent linkage
then reverse what you've done to put in the new shifter
and once all bolted back together with the cover on, it looks soooOOO much nicer with the DC2 knob
at this point it was only mid afternoon and the wife still hadnt gone into labor yet (she was due friday) so i thought id continue on and cut out holes for the oil temp and oil pressure gauges ready for wiring
was quite the ballache
as i have no vice (or even a workshop yet) so big ass scissors and a plyers eventually did the trick
