Should I replace both upper and lower timing chain guides along with the tensioners?

1981 380 SLC with 118K on the speedometer but have no way of knowing actual mileage. Car has sat in CC storage since 2004. It was upgraded to Dual row chain by a PO.. My mechanic suggests replacing upper guides and leaving the lowers as is unless they "look bad". After having lost a motor on a previous 107 with a single row chain I favor being safe and replacing the lowers also. Thoughts from people more knowledgeable than me appreciated. Thanks

1981 380 SLC with 118K on the speedometer but have no way of knowing actual mileage. Car has sat in CC storage since 2004. It was upgraded to Dual row chain by a PO.. My mechanic suggests replacing upper guides and leaving the lowers as is unless they "look bad". After having lost a motor on a previous 107 with a single row chain I favor being safe and replacing the lowers also. Thoughts from people more knowledgeable than me appreciated. Thanks

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