cobra blocks are romeo blocks. if you have a 99-mid 01 its a windsor block and heads. every thing can be transfered over. the timing cover bolts are the only thing that is diff when it comes to the swap from windsor to romeo. romeo blocks are romeo blocks cobra or gt.
if its 96-98 great block some 99/01's had the same teksid block out of the 96-98 cobras, and other 99/01's have the wap block which isnt as strong b/c of the windowed mains in the block. 2v heads on cobra short blocks make some good compression almost 11.1 and yeild some nice gains
Everything will bolt right up. The main difference between them is that the cobra blocks have knock sensor bosses in the intake valley which need to be ground off to fit blowers such as the Kenne Bells. Other than that, there is no machine work necessary to allow all your 2v stuff to fit or anything. I think that is what you are looking for saxmann.
Being romeo blocks, I believe they also use a different main bearing design.....but I'm sure you won't be using your old shit anyways.