Can anyone help by telling me if 208gti engine fits straight into my 207cc

Morning all, 1st time poster. I have 2 issues on my 63 reg GTi 200THP with 64k miles; 1. Suspected timing chain rattle. In November alone, when below 5 degrees in the morning I get 30 to 60 seconds of a rattle on start-up. Not present previously. I suspect this is a timing chain rattle. I...