the best way of knowing 4 sure about your shells without having 2 remove anything is, if possible, is 2 look on the back of your old shells, if they are the over sized ones, it will have o/s 0.4 stamped on the back. if your crank is standard size the shells are no longer availble. i can supply you with some shells at 0.25 crank oversize. unfortuatly if your crank is standard, it a full strip down again 2 get your crank machined. i have removed a crank out of a rst b4 whilst the engine is in, but u have 2 remove the gear box, if your car has abs it can b a pain in the arse. also it's tight on inner wing when trying 2 line your oil pump back up. i'd take the lot out if doing it again.