The Silvertop con-rods are very solidly crafted and with bolts weigh in at 506 grams Each individual (devoid of bearings). The Blacktop was fitted with thinner, lighter and weaker rods that are 485 grams Each individual. Equally are easily interchangeable and use a similar fasteners for the principle bearing cap, https://ok-social.com/story3958115/considerations-to-know-about-toyota-4age-blacktop-engine-for-sale