Briggs and Stratton V-Twin Intek vs Professional Series? Which should I get?

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.

Well, a full restore usually does entail replacing interior parts. That's what a rebuild is.
Here is another thread that talks about intek vs Professional series, https://www.lawnmowerforum.com/showthread.php/57032-B-amp-S-Professional-series-engine