I just checked and although I come on this board nearly every day I haven't actually posted since Jan. of 2015. Thanks to everyone that helped me in the past and keep up the good work...

I would go with the first one, simply for the thicker flange material.

Late to the small displacement party, but here is my two cents. A small displacement engine has to work harder than a larger displacement one to move the same load. Any 'mileage" gain you think you...