Suggestions on performance upgrades for 225

Any recommendations on a manufacturer for both intake and exhaust manifolds? And who makes the best 2bbl carbs for molar?

I'd probably contact Doug Dutra over at .org for one of his Dutra Dual set-ups -new front 3 casting modified rear 3 exhaust maniflod - let's you keep current exhaust and add new for the front 3. IIRC SlantSixDan has (or had) new slant 2 barrels he was selling - new is hands down preferred over rebuilt (that's a crapshoot!).