Bob, I hate to tell you this but I don't think they are available. I rebuilt my starter about 2 months ago and searched emmensly and never found them. I was to all the regular suspects here and across the pond. I went to starter and motor rebuild shops locally and found none. Even spent about an hour or more in the back room of one particular old shop going thru drawers that had starter parts from way more than 50 years ago. None matched the brush tension springs on our starters. I ended up taking an assortment from many places that were close, then ultimately I recurved the center tab to catch the pin it rotated on. The spring I used was alittle larger than the originals and its diameter caused the long thru bolts to rub on it alittle but it didn't affect its operation. The started bench tested very well when finished. It hasn't been used in the car yet. Dave.