So I did a bunch of research before I jumped into this project. Basically I checked the spindle size and made sure the taper was the same. Also looked at the length of the spindle. After all that I figured I could make the Grizzly 5C collet closer for their G3004 lathe work on the PM1236. You can see here a quick run down video of it in place. Works pretty good. The first draw tube Grizzly sent me had a ton of runout and shoot the lathe so I sent them a video and they replaced it. Pretty happy with it. Hope those of you who have Precision Matthews excellent PM 1236 lathe could find this info useful.