i need a STI block for a V3 555 V limited asap because the old one has a huge hole in.

Give Rhidian a bell at DRJ Motors in wales (there numbers on the internet if you do a search) nice guy might be able to help you, they had a couple of sti5 motors just before chrismas for about a £1000. They just sorted me with an RA lump for my 93, so I still have my old engine it knocks but would be ideal for a re-build as it's a closed deck block.