Just so you know;
Back in about 74 I installed a 340 into a 65 Valiant wagon that had been home to a slanty.
I used an A904 that I unbolted from a 273.
I left the 7.25 in the back. Hey nobody told me they were weak. I was 22ish at the time, maybe 21.
Only the short block was 340.
The entire top end was 318, including the cam and induction.
I installed some Hooker Fenderwell headers, the easiest way to hook that up.
To say that the 340 was a torque-monster would not do it justice.
I drove that car for three summers I think, peg-leging the ever-loving crap out of that baby.
And then the trans blew up.
I took the powertrain out, and gave the car to my little brother, who put the slanty back in, and drove it for several more years.
I still have that engine and trans. The car went AWOL, a long ago time ago. The brother is dead.
The point is that the 7.25, in my case at least, was NOT made of glass.