Lately im noticing alot of turbo lag in my 87 mklll, all hoses are a go so i suspect the turbo is going. It is the stock one after all. Anyone know a good turbo i can get to replace the stock one, I eventualy want to upgrade to a bigger turbo. So what kinda turbo should i get to stock up on cash for the build? And what should i expect to need when getting a bigger turbo?