M113 Ported heads
 

Just found this. At least the photos look great. I wonder what the end results would give with cams, intake and exhaust (if it can be fitted....)

http://www.vrptuning.com/projects/stage2heads/

Says they come with cams.

I'm thinking this would be incredibly expensive. Like you could maybe buy 3 n/a 55's expensive.

And I'd take the 55 over a 43 with head work, any day.

that looks very fancy

The heads might be nice, but the cams may or may not be beneficial for us (those specific VRP cams) since they are likely designed around the supercharged motor. You want a different cam profile when the pistons are pulling in the air versus it getting forced in by a supercharger (or turbocharger). I feel like I've seen the price, perhaps it was someone selling a set in the classifieds and it was a couple grand. I wouldn't mind getting the spec's on a set of Schrick cams and seeing if a US company could make a copy or slightly tweaked copy off of a set of stock cams.

I agree. And it would be nice to find a set of cams made for n/a. Nothing even really for the 55 n/a. Don't hold your breathe though.

In the end cams are a trade off one way you or the other. Some good headwork can gain everywhere. I'd question how much could be gained on a 43 though. 302/302 is pretty respectable for 4.3 liters