Was the "new OEM" turbo used? It shouldn't go in 26k miles. If that's the case, there are other issues causing the turbo to fail so quickly. If the stock up pipe is on, the cat could be coming apart and sending pieces into the turbo. Double check that and replace it, with a cat less u/p, while doing the turbo. You can find a used one for cheap in the classifieds here. It also makes a big diff in spool and you pick up ~10hp too.