If I remember right their argument was something to do with the hemi not liking to spool the turbo as well. In my case I wouldnt be using old alki parts as it needs to be totaly streetable but where the heads are more expensive to buy they wouldnt need the extra in port work compared to the wedge heads so I think the biggest extra would be in the valve train.


PS I went back and looked at some of the forums and it wasnt Don Bailey I guess as he said he like the Hemi better than the wedge as it was better at scavenging.