Sounds like a fun build. I want to put a late 90s to early 2000s 4100 MPFI into an older 30s GM truck myself and turbo it. That was a factory port injected 250 I6 using a TPI like manifold with a MAF based ECM, with an OEM split exhaust manifold and factory serpentine belt system. I drove one in a 1999 Tahoe with the factory 5spd and it was a strong runner in the heavy 4 door Tahoe.
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