If you build it right, ill bet teh 205's will treat you well. If you are really concerned about low end (under 2000 rpms) go with the 185's. I run 180 cc intake runners on my 302 and it will pull great from 2000 rpm on up, with a healthy cam. Now you have to deciede if you really need the 205's over the 185's because they are more expensive.