ET'S with ported J/or other iron heads SB

Ill add to the mix by saying I do my own porting so my cost is only around $400 total for a set of complete iron heads that flow in the 240 range.Ive seen the out of box edelbrocks compared to stock j heads on a flowbench and they were 20 cfm shy of what I expected so they need a little help just to get the initial flow numbers (to as advertised anyway).Also all the machine shops around here tell you up front they need to check them out and Ive seen first hand many sets with little issues such as seat,guide ect problems wich adds more money.To me they dont seem like such a bargain unless you have the extra money to spend or really need to step up flow wise over a good flowing stock head in wich case your paying for extra porting anyway.