I have a new box set of Manley H beam rods for 4G63T 6 bolt block. Part # 14021-4. These are standard length rods with 21mm pin journals. I purchased these rods for a build that I'm not doing at this point. They are brand new, never installed. Manley tech stated they are good for 625+HP. They come with the APR2000 rod bolts. $330 dollars with free UPS shipping. Save some money and buy these. PM me for arranagements.