AnotherA,
Did you have presence on
www.theturboforums.com?
Is that the VS racing that you bought through?
The master power series is very strong on the turbo forums. They have had good response, solid performance histories, and those guys really challenge a non performing product.
There are also a ton of guys over there that are running a blow through carb setup. There are some things that need to be done to the carbs, but they have a DYI section, or there are several vendors that will make the modifications, or sell you a complete carb, ready for blow thru.
I am looking to GN turbo my /6 Dart. GO FOR IT!