What you have just discovered is exactly how every one in the US I have ever seen had the condensor mounted(early or late). (probably near 40 US FJ55s with A/C)
@cDan, were there actually any FJ55's that truly came to the US from the Japanese factory with the A/C installed? Not a single "Factory" A/C truck I have ever seen in the US had those brackets. Also, as the blue and white PIO stickers indicated (seemed to have shown up more regularly in ~'76 and later), it is likely a port installed option, of the Nippon Denso kit in a box added at the port, hence lack of brackets?