Score! What did I do?

I believe that a cam & lifter swap is in order.......I'm browsing cams as we speak. I'm contemplating pulling the engine and inspecting everything...
And also from all that I've found....all 273 had solid lifters until about '67.
The 273 was the smallest Mopar V-8 at that time.....all 318's were Poly engines(wider than a LA 318) Yes...all Poly 318 were solid cam. I think the only small-block hydraulic cammed engine was the Dodge(?) 326 Poly. In '67 all A motors switched to the lighter, smaller LA style motor.
That's some of what I know....some of what I've found. :D
I tossed the Poly idea...that thing is heavy.
My 72 needs a 383........then I would sure keep the 273 in the Valiant.
Any cam recommended over another? I want a nasty cam in this one.....