For what it's worth. My car (70' Charger) has had a 440 4 barrel, a 440 Six pack & a dual car 426 Hemi in it over the years all with the same throttle cable with no issues. May not have been 100% factory correct but it worked just fine.
1963 Belvedere 440 Max Wedge Tribute
1970 Charger R/T S.E. 440 Six Pack
1970 Challenger R/T, 528 Hemi
1970 Charger 500 S.E. 440 4 BBL
1970 Plymouth Road Runner 383
1974 Chrysler New Yorker 440
1996 2500 RAM 488 V-10 4X4
2004 3500 Dually Cummins 4x4
2012 Challenger R/T Classic.
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