Basic 318 Mods
I think, at least the way I read it, he wouldn’t.
As far as my two cents, even with a 2.76 rear gear, dual exhaust w/a H pipe, 600 cfm carb on a Performer intake with an open air cleaner, upgrade the ignition to a CD, open the plug gap to .050, limit the timing advance to 36* and bump the initial to 15*.
Call it a day there.
Camshaft wise, on a stock 318? Probably wouldn’t do it myself. At best, a cam at 210@050, at the most 216*@050. This may take away a little mileage.
This cam or equal if it is available;
https://www.monicattichrysler.com/comersus/store/comersus_viewItem.asp?idProduct=397