Early A's running magnum manifolds?

what about 70's truck manifolds that centre dump? Anyone try those?
or what about these-the ram truck headers

http://cgi.ebay.com/ebaymotors/Dodge-5-2-5-9-Race-Headers-Durango-R-T-5-9-R-T-V8_W0QQcmdZViewItemQQcategoryZ33631QQihZ024QQitemZ370023662428QQrdZ1QQsspagenameZWDVW


Al.