Wotcha and welcome - sourcing a clutch is straight forward if you know what you want to spend, as mentioned scooby world do them
http://www.scoobyworld.co.uk/catalog/index.php?cPath=210&osCsid=3bfe277dd554af66194988c899c00f82
look at doing a flywheel skim to ensure all is good on reassembly and avoid premature wear
Yes you and you mate should get it done in a day at a garage with jacks, tools etc