You are viewing a Brand New Nismo RB26DETT N1 Engine Block. This RB26 Nismo N1 engine block has a 86mm bore and can be bored up to 87 and 88mm with no issues. This is the strongest RB26 block available and can easily handle even the most extreme amounts of horse power! You can use this block in all GT-R engine bays. This listing is for number in RED or GREEN in the parts schematic. We can get you anything you need in that schematic so if you would like please contact us with the SKU number of this schematic and the number of the part you need and we will be happy to get it up in our site as soon as possible. Get this and all your goods direct from Japan with RHDJapan!