Is it even worth trying to sell a 741 case??

My '69 340S FB has a 741 case 3.91 SG. If I go the A500 route, it might stay 3.91 or possibly 3.73. If I stay with it's 727, I'm slowly gathering parts for a 742 case 3.23.
I'd then take the 741 case and build a 2.94 SG to put under my '72 Fury III (360 with some upgrades). That 2.71 peg-leg is killing me at the start. True, it's more of a interstate cruiser, but it'd be nice not to get dusted at a light by a Honda Fit, lol.