no way lol, bored of gettin dirty now and engine etc could cost £400/500 for a half decent one.
and labour er depends if a mate does it but could cost £300 quid if ya got someone to do it with ya.

really depends mate what parts you use as when the engine is out it is best to replace stuff and will just bump up the price..if your worried about how much it will cost you will prob cut corners and will turn out badly