The hole has been repaired once, well with this 2-part metal mix stuff i got my hands on. It lasted a good few months, but now the water has decided to work its way out the back of the rad too.... its hard to explain, but its annoying cos i cant actually figure out where its coming from! I have no idea on how much it will cost to have it re-cored, but i have looked for alloy welders in my area and there aint any, well not that i can find anyway.
If i do end up choosing to replace it, i will also replace the Pace intercooler too. would much prefer a full frontal cooler......