If you don't need to save 65 lbs off the Cleveland engine weight w/aluminum heads, +15 more from an aluminum intake & 10 more from an aluminum water pump (100 total), there are some sets of Australian 302 Cleveland iron closed-chamber heads floating around. They were never sold in the US, look like 2V- port-size 351 heads as used on their Falcon 302 V-8, with slightly smaller valves. Work very well on street engines.
As mentioned, the SVO heads relocate the exhaust ports 1-1/2" up and 3/4" back towards the deck lid so there are fitment issues with bolt-ons like headers, header-to-fuel-tank clearance and some 4bbl air cleaners to the deck lid. The SVOs used two different header bolt patterns, too. The iron 302 Cleveland heads had zero fitment problems. Larry had some of these, too.