Well I guess I want to be able to cruise over to Eastern Washington occasionally at highway speeds (approx. a 2 hour drive) or out on cruise runs down to Oregon without laggin' behind. I guess I just need the best bang for my buck. I'm not sure what I currently have for a rear end (I know, I know)...as all of this was updated before I received the car. I have just started diving into it. How do I tell what I have back there? Is there a number on the differential that will determine just what I have. I have a feeling my motor, driveline and rear end came from a '55 - '57. I was hoping to keep the 235, but if this turns out to be a major hassle, maybe I should just bite the bullet and get myself a ....... 350 SB. Hope I said that quiet enough to where not too may will hear me.