Its the new generation K24 block (R40 series) from the Accord (also comes on the new TSX). It has 88mm bore, used 12.5:1 compression pistons, used BP rods, ACL race bearings, complete with R40 crank sensor. You will need the R40 intermediate shaft and alternator or even better if you already have the new Accord or TSX then it just swaps in.

Currently it has a Type S head on it with upgraded valvesprings and IPS K10 camshafts...never been started or used since rebuild.

can sell short block only or long block complete:

$1500 shortblock
$3000 longblock

pics here...

http://gbrtuning.com/12K24R40.jpg
http://gbrtuning.com/12K24R41.jpg
http://gbrtuning.com/12K24R42.jpg
http://gbrtuning.com/12K24R43.jpg
http://gbrtuning.com/12K24R44.jpg