newbie to motorized bicycles

I was on craigslist the other day looking for a new truck, when I saw an add for these kits to turn bikes into mopeds.. clicked on it and sought the 66/80cc engine would be just the ticket for my bike.. searched on Ebay and found them cheaper and I have a kit on the way... the bike is a GrantSport Easy Tour from the late 60's ( sold by W.T Grant stores ), it's not worth much, as they were low end bikes, and it's not the best cosmetticly.. I have just a few questions, I'll ask in the appropriate forums