[Cherryville Chuck]

Hi Danos and welcome. Is the part that Stick showed what you need? That looks the same as my M12V but I also have an M12V2 and it has a radically different bolt pattern. You can post pictures from your hard drive. Click on the Advanced post method and click on Manage Attachments. Enlarge that screen to full screen as there are buttons to click that don't show up in the minimized version.

 

[Cherryville Chuck]

This link : https://www.repairtoolparts.com/hitachi-parts/hitachi-m12sa-parts-list Part #59 shows it as a base for the M12V or M12SA although it is unavailable there. That seems to be the right part. My M12V has 4 evenly spaced holes for the sub plate. The picture there of a Hitachi Router is the M12V2 which does not have evenly spaced holes. Two on one side are closer together than the other two. I would say you need a base for either the M12V or another SA if you can find one. Maybe someone has a dead V model. Mine is still going strong. I believe it's possible that an older Makita model may be the same router but I'm not sure exactly which model it was. I've seen a collet for that router that is the same as the M12V.

 

[Cherryville Chuck]

I'll go out and measure the tube diameters and spacing in a bit and get back to you. If they are the same spacing and diameter then they should work I think. The M12V2 has an added feature on it that is handy. There are threaded plugs on the bottom of the tubes so that you can remove the springs without removing the base from the router. I don't want to remove the bases from them as that can be a PITA so I won't be able to tell you if they are longer on the V2 which would affect how much bit is exposed at max plunge but if they are you could cut them shorter.

 

[Cherryville Chuck]

I'm afraid it's not good news Daniel. They both have 20mm diameter tubes but on the V model they're 14.8mm apart and on the V2 they were either 15.2 or 3 mm apart so they won't interchange.