I need assistance in identifying the adaptor plates in the pictures below. The ones marked 100-S (middle and bottom) are identical and each milled out of steel, and I believe they are for a SAGINAW power steering conversion. The one marked 200-A (top) with the large hole and indented hole is milled from aluminum, and I believe it is for a transmission/transfer case conversion. The plates came with the 1966 FJ40 project I inherited. Information on the applications and company that produced them would be great.