Chevy Aerovan conversion possibilities.

Hello,
I am asking as to the feasibility, and advisability, of converting a Chevy AeroVan to electric, there is our available for sale cheap locally. I would want to keep all the capabilities of the original van (towing and hauling at speed etc...) and have a fuel to electric backup system to accomplish this when needed for prolonged use or performance (which would make it a hybrid technically). Are there electric motors that can pull several hundred horse power even if adequate power is provided. I have read comments on other sites that this platform is not the best by far, but its not the worst. Opinions?