Jeff,
How much do you sell that 3" DP for? Also, in the attached pict, it appears as though where the DP meets the turbo, it is ovaled like the PTE style DP's. I assume you take the plug out of the lower hole on the back of the stock/20g turbo? And if so, how many bolts do you use to attach the DP to the turbo. I know on Christian Dionne's old 3" stock turbo DP, which was also oval like a PTE DP, it was still only held on by the 3 bolts. Is yours the same way? I would think that would leak out the bottom over time.