Edelbrock Chrysler E-Street / Performance RPM Head Bolt KitEdelbrock E Series Cylinder Head Bolt Kit #85912 is specially designed for use with Chrysler big block engines equipped with E Street Performer RPM cylinder heads (#60825, 60829, #60929, #60185, #60189, #5090 and #5093). This kit contains all necessary bolts and washers to install one set of heads. E Series bolts have a yield tensile strength of 190,000 PSI for strong and reliable loading with generous filleting throughout to eliminate stress risers.