NZ Motor racing site (Sargent) shows him in the 1967 GP as "Pat Loughlin Cooper T53 Climax 2495cc".
Yes, only knew him as Pat, & Roger his brother, I thought A70 & A90 where different castings 2.2 ltr & 2.6, first used as2.2 in austin 16 about 1948 Roger, no did not know the guy's you mentioned from Thames, cheer's