Thanks mate. Mine was majorly cracked from hitting the screamer pipe on the ground, so had a massive hole in it. It had already been repaired in other spots though, so I'd ay you're spot on with the welds.
The turbo is a HKS T300, so the flange hasn't been converted. It was all part of a kit, I just had the manifold repaired, and the wastegate location braced and moved from the bottom to where it is now.
I've attached a pic of what it looked like when I bought it.