440 vs 360 barracuda

I own an original 383 '68 cuda, 4-sp and it is fun! With the mods you're anticipating, the HP numbers should be attainable. Don't forget a large radiator and this will be a premium fuel car. Already on my car I must be careful on how much throttle I give it because it is so easy to break them loose- yours will be even more so. A 8 3/4"rear end at the least. Have fun.