Yeah I think it would be a good experiment on a 318. Get some factory magnum heads. Indy will bowl blend and port match for $250 per head then add $150 per head for a valve job. At that point it's sitting around $800 for the pair then add a couple hundred for springs and retainers. So $1000 into stock magnum heads maybe flow about 230-240 when done. Plus whatever you pay for the stock magnum heads. At the current price of speedmaster heads the price is fairly equal. And for a 300-350 hp 318 my personal choice is use factory rockers for magnum. Then whatever a person chooses for rockers on the speedmaster.
Then take the same engine and swap heads and dyno those babies! Be a good group project for the fabo crowd. That would get everyone's mind off of world events for a few moments and we would learn something to boot