I would upgrade to a 10.5 if you can. I thought there was a way to mod the flywheel and add the larger pressure plate and disc to it
Back in the early 70s I put a 10.5 in my car. I used a Lakewood Scatter Shield & a Hays Clutch & Flywheel.
It was a lot of work nothing fit right. Had to move the clutch fork pivot mount in the bell housing, (welded a new piece of steel & drilled & taped new pivot mounting holes) & use a different fork. If I remember right I used a 340 fork.
I had to narrow the bell crank & relocate the inner arm.
The bracket & ball for the inner end of the bell crank that Lakewood sent didn't line up with the ball on the frame, so I had to weld on more metal & drill new mounting holes.
It worked great & ended the clutch problems but it is a pain measuring & getting everything lined up right.
First bell crank ball mount I made, I didn't realize I measuring at an angle. Had the bell crank at slight angle, linkage broke first time I pushed the clutch pedal in.