Sure grip 7 1/4 strenght?

Hello again my fello A-body poeple. ive been doen alot of work to the ol 65 gt & she is runnen real good (rebuilding front end as i type this) I had an honest qustion of the guys who have delt with the ol 7 1/4. Honestly will it live very long behind my hi-po 273? i just swaped in an isky e-4 cam & direct lube lifters (That has gotta be the best cam for this little motor fyi!) helped "alot" in the power dept. now as i get ready to open up the tranny & ive got a custom built 2500rpm stall (ish) corse spline converter for it & gonna drop in a set of 2.76:1 wide raito planetry gears while im overhauling the trans. the rear currently works great! its a 3.23:1 clutch style sure grip. I know thease little guys are kinda hard to find soo do i run it until it blows? or sell it now while it works fine & look for an 8 3/4? i wanna keep the small bolt pattern is why im not looken @ running a 8 1/4 (i have one in the shed) just dont want bbp. Thanks for advice:burnout: