no they won't the only thing that the 2 engines have in common is that they're triples. The 96 up XCRs are no mono blocks, thecase volume, and port design was completely different, the 99 XCRs all had VES as well. You can find a setof HTGs for 250-350 if you look around. The XCR's have a pretty well designed exhuast from the manufacturer.
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