Guys!!!! the heads are made "DOWN UNDER" new zealand or australia..... I'm a dealer an I sell the same set of heads ....I have a set on my bb 383.... haven't had any problems with them.... haven't beat on them "YET" but I will....an soon...
if you want I can get ahold of my son in law, he works at edelbrock, in the efi dept.... he can give the low down about all the efi's on the market... thanks starman1