Its been a little while.......
Honestly, very little has changed. You can get different intakes (not always better), cams with more aggressive ramps (not always better) and better tires but mostly it's the same.
Straight is straight and round and round and balanced is balanced. Get the basics correct and you're pretty much assured of success.
BTW...the one thing that has gotten better in the last few decades is the valve job. There is zero reason to use the age worn 3 angle grind any more, unless you have flogged the head and that's what worked. I've never seen a head that wasn't better with something other than the standard 3 angle valve job.