I had an issue with the Forge where one of the valve was stuck open. Forge has been very good with replies etc. I just haven't had a chance to try to install it again. As all the tests Forge suggested are all good my suspicion is that there might have been a blockage on the vacuum port.
There are plenty of mod 1Ms around but the flash are more conservative than the potential JBs and Procedes. The forge is not really necessarily until you get to higher boost levels where boost leak is a concern.
Turnersport is the only other maker I am aware of that also makes a N54 kit.