My combo fwiw,...

70 RR 475" Hemi iron block, Al head, tti 2&1/8", 4spd.
.920 bars, & Bilstiens all around.

Two different friends, one with a 69 Hemi 4spd Superbee, other with a 70 V code 4spd Superbee, have both ridden in mine and commented "it rides like a Cadillac".