Welcome to the Team Tim!
The 335 horse is configured the same way as the 325 horse 396 is (the extra 10 horse comes from the extra 31 cubes of displacement). Your missing carb should be a 780 cfm Rochester QuadraJet carburetor (designed for a big block, not the smaller 650 cfm version found on small blocks) as the carb and distributor though interchangeable between small blocks won't deliver the full power it had new back in 1969.
Your 427 has oval port 230 cc intake runner and 118 cc open combustion chamber cast iron heads (versus the previous four years closed chamber "bath tub" design). It left the factory with 2.08" intakes and thick, heavy, steel 1.72" exhaust valves. These heads can be easily (note I said easily not cheaply) rebuilt with bigger valves (stiffer valve spring rate with dual coils to control the extra valve mass), new bronze valve guides for 11/32 inch valve stems with hardened 2.25 or 2.30 inch intake seats and 1.88" hardened exhaust valve seats to accept the correct size swirl polished stainless steel tulip style Manley valves. With a set of chromemoly push rods and light weight chromemoly spring retainer. Finally have the heads pocket ported and your 335 horse can be pumping out close to 600 horsepower with the right cam. (or you could save money and buy a new set of oval port aluminum aftermarket heads).
Your stock 10.25:1 pistons are cast, not forged if still original. That static compression ratio combined with the mild stock flat tappet hydraulic cam you should have if still stock, and cast iron heads; is a recipe for detonation. You not only want a lopey cam to make it "sound" good, you need one to bleed off some of your static compression. Normally for a street driven car I recommend a Thumper or VooDoo cam as it has the duration added to the exhaust side where it doesn't hurt performance as adversely as a long duration cam normally does. But you need to bleed off some compression to run the lower octane gas available today. So I am recommending a RV or high torque cam; which would be ideal for your application (one with higher than stock lift but only a little extra duration added for a slight lope).