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  1. Replace OEM engine with Jasper

    OEM Issues
    So I am forced to get a new engine, and we were going with a Jasper 4200. I was trying to find specs on the new engine but was unable to. Anyone know how they compare to the OEM 4200? I have a 2006 Envoy. I assume it till be atleast what the OEM engine was but I was hoping it was going to be...