I have a collection of LA 340-360 heads... all iron.. willing to seel them off eventually ... would like to get light weight aluminum heads that appear stock on the outside (in other words, with the general casting contours and freeze plugs as the cast iron stock heads have)... as the 440-Source BB heads are available... BUT, its my understanding that there are no aluminum SB heads that give that appearance... having the original LA intake ports/shape, same exhaust ports/shape.. as well as bolt pattern. The aluminum Eddy and other such heads are dead give aways... unless they could be reshaped/recontoured.... has anyone ever done this? ideas?