Yes I'll probably use one of these,
Brand New (In Box) Villiers f400DE(H) 10hp Diesel Engine | eBay
Chinese but better specs than usual and with sufficient charging capacity to run an electric start and lights. Something a lot of the Chinese ones can't do.... insufficient amps. I haven't started the project yet .I have to visit a bloke about 500miles away from here to check his diesel installation but he's been sick so I've put things off for a while .