[undy]

Eboks are "OK" off the shelf but if you really want to wake 'em up get a set of Keith's (Keith Craft, board sponsor)stage II CNC'd heads or Barry's (Survival Motorsports) ported offerings. I know I'll get blasted but FEs have about the most restrictive heads around for a big block, Ford or Chebby (250 CFM intake flow and less). To really get good HP numbers they need some serious porting, around 330 CFM +/-.

As a point of reference, my factory unported OEM LS7 small block heads flow 365 cfm @ 0.600" lift on my 07 Z06.

Dave