I was gonna do a full restore on my Briggs and Stratton 20 HP Opposed Twin, until I took some Micrometer measurements and discovered most of the interior parts are too worn down to be reused. Because of the excess wear, I have no choice but to buy a new engine. I need to know if the advantages of the Profession Series is worth it, or if I should just go with an engine from the Intek Series. Also, is there anything I need to know about putting a V-Twin on a lawn tractor that originally had an Opposed Twin? I would appreciate the help. Thanks.