Most engine swaps need fabricated motor mounts, possibly new transaxle mounts, new headers, rerout the gearshift, fab a bellhousing adapter plate (for most), and hook up the cooling. 350 and 454 Chevys use a custom-built bellhousing once available from kit-car builders. The Mercedes V-8/Pantera built in Germany by a now-deceased POCA member used an adapter plate, I believe. FYI, all small & midsized Ford blocks use the exact same bolt circle and pattern. Only the big blocks are different (as well as being 4" longer). Getting an odd engine bolted to a ZF is fairly easy; it's all the rest of the details that'll kill you.
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