Need help choosing an engine!!!

I vote 440 RB because there is no substitute for horse power like cubic inch displacement, stroked! I own a 340 now and to establish it for upper end is difficult. I used to own a 440 RB to establish it to slow down was difficult. In a race a 340 will take a 440 until it hits it's upper power band and that's it the 440 walks away with it, usually about two car lengths. Same with a 351 against a 428. A friend had a 65 Stang with a 289 with thousands of dollars in it and my brother had a (stock) 69 Torino Cobra Jet 4 speed and we ate him up at 3rd gear every time. The Stang would win in the 1/8th every time but never in the 1/4. That is the difference in C.I.D.