just my view , not fan of big huuge american engines that produce in stock form very little power per litre 6.0l wiht 400 bhp equates to 67ishbhp/L vs the vq35de of 80 or 90+ from an HR. plus such abig block is gonna weigh the front down !
not somthing i would ever consider doing to car but it IS somthing thats done , not kocking it if you want massive NA power its the only way to go.
again all just an opinion , if someone does it the guts to you it wil be on torquey beast.