8.25 rear end advice

Picked up an 8.25 rear end to put behind my 65 barracuda slant 6 so I could get the BBP axles. Believed the ratio to be 2.76 but as it turns out it is 2.45. What do you suggest to get the raatio back to about 2.76? a) change the gears in the 904 (with rear pump) b) try to get rid of the rear end and and start again c) live with it. The car will be primarily a street car with both freeway and town driving. Town will probably be the greater use. Thanks for the input.