I’m proud to offer these THOMPSON Timing covers for 1955-58 Chrysler HEMI. These are very high quality pieces. Cast in the the USA with 319 aluminum alloy off the original casting pattern from back in the day. Machined just like the originals and accept a blower hub bearing and seal or you can just run a seal if you prefer. I only have a very limited amount of the magnesium covers. Bearing and seals are not included, Cover will include the part numbers of the seal and bearing. If you have any questions, feel free to ask thanks! looking for $700 for the aluminum and 950 for the magnesium thanks!