what flywheel for a 273 128 tooth. with a 360 bellhousing

Will a 273 BH from a 833 fit a 360?

Yes, but you will be limited to the 9.5 OD or scalloped 10 OD in clutch. Plus have the flywheel balanced for a 360. Much easier to swap to the more common 10.5 OD clutch and bellhousing. Get the special parts to swap the clutch linkage into an early A.