Wiring Suggestion/Help

On our '68 Bcuda Convertible build, we swapped an older 225 with a point ditributor to a '74 with an electronic distributor. Now we've realized the new brand new wiring harness from Classic Industries for the '68 doesn't work for this and looking for anyone's experience/suggestion whether we can mix-and-match or should should splice? Either way, what other electrical goodies might we need for this regardless of the wiring path we use?