Steve, if you saw the last few posts in that "Indian" thread where I mention my friend Phil in California and his collection of bikes, well, he also has a Kawa 750 H2 which he let me ride a few years ago.
Yep, I felt just like YOU felt riding that RD350...once those puppies hit the sweet spot of their rev-range, which DOES seem to come on all at once, yep, you better have both hand firmly grasping those bars, alright!