There would be nothing to gain. Besides a longer rod. 8.200 Windsor VS 9.200 Cleveland deck.
The Boss 302 and Boss 351 used the same cam grind 227 115 477 Boss 351 had 3/4 of a point more compression. Same heads. I have built many of both. Boss 351 uses the big port Much better and there for has 60 more ft/lbs of torque. A basically stock Boss 351 with headers and a 750 Holley and some traction will run high 12s.. Click on the Hot Rod link for the video of the Boss 302.
https://www.yenko.net/forum/attachme...1&d=1614140582
https://www.yenko.net/forum/attachme...1&d=1614140651
https://www.hotrod.com/articles/stoc...T_keufEnpOUxoI
Couple Boss cheater engines that i recently built.