Offenhauser Dual Port 360 - run it or scrap it?

on my spreadbore Dualport
I once had in mind to max the cylinder pressure, and run the small primaries on 87 gas, and the secondaries on 91. But neither the TQ nor the QJ, have separate bowls. I bet it wouldda made great fuel-economy tho, and decent enough power for a streeter. And around here, 87 is about 80% of 91, so that is a very significant savings on a Daily Driver..
Oh if somebody only made drop-in high compression pistons for the 318, for reasonable money. or longer rods I guess.
Speaking of which; how cool would it be to have adjustable length rods? I mean you could take any old smog-teen and just crank the pistons up to where you need them to be, and bolt it all back together; how cool would that be.
But if you went too high, no problem, just crank the rods down a bit.
I know, I know, that would come with it's own set of problems...... still ............... it's fun to think about.