Do you have the turbo now? And if so, did it not come with a new billet aluminum inlet bell? It should have come with a new billet aluminum inlet bell like a TA-49 does. If not, I'd recommend you call PTE and see if they will sell you one. The stocker has way too much neck down and would have to be majorly ported to even think about being close. I would run a billet one.
HTH
Patrick