I won the HKS SQV BOV replacement for the stock one, fits in the same place. I wish I'd never strayed from the stock BOV. My car is hard to tune properly with it . . . it dies occasionally after boost (indicating it's too loose), but it also shows signs of being too tight sometimes. It's rough to get running right. I want to eventually go with a stock BOV and mine welded into the intercooler piping . . . that should give me reliability and performance.
Why do you want an aftermarket BOV, BTW?
Why do you want an aftermarket BOV, BTW?