Yes, I've seen that. That is useful for the performance of the B-26 and early B-26B aircraft used in the Pacific, but does not give me information on how the upgrade to the more powerful R2800-41 and -43 engines in the later blocks of B-26B (through block -4), as used in North Africa, affected performance. The manual I have for the post-July 1942 modified B-26B, which includes the armament upgrades, only contains flight performance data for the R2800-5 engine.