Small Block or Big Block- help me decide

I've got a big block (400) in my dart and a 360 roller (from 1989 truck) in my cuda. Gotta tell ya I did it backwards. The smaller wheel wells on the dart would have done better with the higher winding small block, and the bigger wells on the cuda would have been better with the down low grunt of the big block. BTW they're both a blast, yu can't lose!