best of luck

Oooooh, another 1970 KB10, good score, & it's red too. We can see just how good the original red can look when we look at Mopar's red rocket.
If you do as good a job on this as you did on the H165 LSD's, then this one's already a winner.

If you plan to end up with a boostrd engine, might I suggest that you start with a 1200 engine instead of the A10.

The little A10 is a good design, but if it ends up boosted, then I suspect that the three main bearings might not hold up so well as the five main bearings in the 1200 will. Also, the short 59mm stroke of the A10, particularly a stock A10, means that it will be down on torque compared to the stock 1200 engine, & with the Coupe being the heavyweight of the B10 range, you will very likely find that it will need to rev a bit more to keep it bubbling along.
Although, if you can get reliability & 70kw atw from your previous car, then perhaps I don't give the A10 enough credit.

With the appeal of being a direct drop-in, into the B10 chassis, I regard the 1200 engine as the substitute 'standard replacement' engine.

ohh she looks a bit rough! What did you pay for this fine peice of motor engineering? Also what gearbox/diff combo are you looking at using so i can copy?