You really don't need too much 'help' for these engines - the later DuraSpark distributor and possibly an MSD box, but the OEM box is pretty good.

If you can find the D0VE-C HEADS (Dave S suggestion which were used on both the 429 and 460 from '68-'72) you will be w-a-a-a-y ahead.

The 1406 carb 750 cfm should be fine. The OEM intake - There are better!!

Camshafts - I agree with needing a roller version in today's oil world. Many choices to pick from.

Timing chain - a Ford or similar double roller with a multiple position small gear. I ran one 9* advanced in a '76 F250. What a wake up call for that engine along with a Holley 3310 (the 780cfm version) and a set of dual exhausts. That truck (std cab, 2wd, 3.70's) was a sleeper but would still pull a big 9000# camper easily.

Get more into it and we'll help you spend your hard earned dollars