Didn't know where to put this but if anyone is considering putting a Sanwa or Seimitsu stick into something small like a Namco shell then it is possible.
Mounting a JLF stick into a low depth stick:You can mount a JLF into a stick which has enough depth to simply lower the stick with appropriate spacers (i.e. nuts and washers will suffice) to achieve the correct height of the stick. Simply make the holes for the mounting plate and mount the height as you wish.
On small sticks with no room to lower the stick with spacers you can simply mount the stick by removing the mounting plate and using the holes on the black housing to mount. A short shaft is then used in place of the default sanwa shaft to achieve the correct height.
Screws - Countersunk M3 (x4) and M4 (x2)
Appropriate Screwdriver (Pozi)
Drill
Countersinks (M3 and M4)
Drill bits - 3mm and 4mm
Dremel with aluminium oxide grinding bit
Original hori shaft or other small shaft
Sanwa JLF stick dissasembled
1 Use the dremel to grind away the areas to fit the stick flush with the case.
2 Place the black housing and measure up where to drill the holes
3 drill the holes in the appropriate places and then use a countersink bit to makes the holes countersking
4 mount the stick using m3 and m4 countersink screws (see pic)
5 assemble the new shorter shaft (usually Hori) into the sanwa stick and you will find it will not be touching the bottom of the case and be the correct height.

sanwa shaft length from neck to bottom - 76mm
hori shaft length from neck to bottom - 53mm
datel shaft length from neck to bottom - 55mm
There is already a guide, but I find you can achieve the same results without cutting away parts and drilling holes into the actual JLF stick. Here is the guide i'm referring to:
http://pineconeattack.com/2009/03/07/how-to-mod-the-hori-ex2hori-wii-fighting-stick-with-actual-sanwa-joystick-and-buttons/---
I achieved a Seimitsu LS-32 mod into a Namco recently:


The difference of course if that the shaft was reduced from the bottom half - not the top half and an M3 thread was inserted to act as the new cir-clip.
Preview video: