[Excaliber]

The more I hear about aluminum parts here on CC the less impressed I become. Like alloy heads, well OK, great weight savings and few other options for a new build. I'll take a new iron block over alloy everytime. And,,, I won't be giving up my iron heads or copper radiator anytime soon. I think any potential weight saving is far over rated in any case considering the risk factor(s) go up significantly with alloy parts.