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For the cost and fitment problems you might face its not worth it. Check on corral hell you can get a used shorty x for like 75. I paid 120 shipped or something for a catted shorty H.
A shop should be able to make the midpipe you have work for no more than $50. If it doesnt fit right you can just take it back and tell them they didnt do it right and they should fix it. That's the road I would take if your looking to save a little money.