Thanks for your input over telecon.
For others who want/need to know, the injectors code is 23250-46020, genuine 1JZ-GTE injectors. Heartily recommend to anyone who is going to be running a forced induction setup on their cars. They are good for upto 1 bar of boost - performance falls off after that.
@rohail17, I am afraid I won't be able to get these off you, primarily as have found a closer match than these (I would have had to make too many alterations to fit them in anyways, these being side feed and a different connector to what I was looking for).