Hello I have 52 inch Wright Stander that I purchased in spring of 2000. It only has a 16hp Brigg's Vanguard recoil. I tried doubles on it but it slowed down rpm's to much, so I currently run only one double blade at the discharge. At idle the rpm's are 3500, with blades engaged it drops to 3300, while actually mowing they run about 3150 or less. The power seems to be lacking so I would like to replace it. The largest recoil engine I can find is a 18hp Vanguard that would bolt right on with no mods at all. But it hardly seems worth the swap to get 2 extra hp's. I'd like to put the 23 Vanguard electric start on, but I have a few questions. First will it fit? Second what parts will I need to convert the machine to electric start and how do I go about finding them? Third which model of the 23 Vanguard will I need(There are many different models, I know I need 1 inch shaft but not sure about amp's or alternators)? And Fourth if this engine won't work do you have any recommendations? Your help would be greatly appreciated.