what heads to run on a 273

If what I've read is correct... All 273 heads had the same ( heart shaped buldge ) closed chamber design wheather dome top Commando pistons or not. A different dome top piston could hit something but I dont think The Commado pistons will.
I've also read that the adjustable rodker assemnlies from the 273 heads will tranfer to those 302 castings as well.
My memory sux though so stay tuned.