Before going on a ramen diet, it might be good to realize that those instant noodles are not the same as regular pasta. They are made by extruding noodles into oil for a quick deep-fry that sets them into cakes. Combined with the sauce packets, they aren't the best things for any diet. Personally, I would rather have something that tastes better and is "healthier."
As far as clean bulking is concerned, I figure it is all broken down by your body, so it all doesen't matter where it comes from. Your digestive system might have to work harder, but it eventually works out. It is kinda like eating tons of meat for creatine or eating lots of tomatoes for glutamate. It all depends if you care about the extra intake of fat/calories. Purity of any food product seems to be most beneficial on your wallet than anything else.
Please correct me if I am wrong, but I have not seen any credible studies that say otherwise.