small block heads for a long distance cruiser

str12-340 said
We can all dream right? How about 13s and 20 mpg?

But seriously, I've got X heads that I could rebuild, but I was wondering if the EQs or LAX from Indy were worth spending some money on rather than stock heads. I understand that I can use stock rocker shafts and rockers with those, yes? I'm leaning to iron for long term durability but could be convinced otherwise. But I'm looking for something that would give it more kick from 1500 to 5000 rpm while being simple and durable.

I get what you're saying. It could be cheaper to put money into the X heads, for instance rebuild them with some lighter valves , very mild port work to bring the .200-.400 lift flow number up to a comparable ootb valve jobbed eq.
Price it out, in my opinion price is the deciding factor when both outcomes are near identical.