I think they had a lot more than that allocation pr00ne, I certainly remember seeing at least 4 different 45 sqn T7s and "loads" of single seaters, but then I was only 10 and memory fades...
bizarre to think that in 1972 with the "space age" Jag and MRCA just around the corner and with the (then) new F4K and Harrier in service, 2 new Hunter squadrons were being formed and the Shack had re-entered front line use!
I also seem to recall that 58 went on until 22 July 76 with a massed (10 a/c) arrival at the TWU. Certainly 45 & 58 both had a jet at the Hunter meet at IAT in July '76
Got some piccies somewhere, only of individual jets though if you'd like to see.