Hi everyone, hope your all staying healthy and safe. I'm approaching a critical juncture in my rebuild and thought it might be wise to ask a question i'm sure many of you will have already figured out. The last time my engine ran was 1986 and I've heard conflicting suggestions regards the lead free fuel issue. On one hand I was told that the L24 will run without any modification, yet recently I was told it would be best to have the exhaust valve seat modified to take the extra hammer from the lead free fuel. Currently i am in the process of taking my block to the machine shop for a once over, so it would be an ideal time to carry out any mods if required. Can anyone shed light on what would be the best course of action. Any advice would be appreciated.