Trust me I loved the L67. But all dem Engine Fires. I drove a GP GTP one time it was a great little (boat) car. Until it caught fire. So many fires with that engine, but when it wasn't on fire it was relatively easy to get some more power out of it.
There's actually couple variants of the 3800 on that list. The Gen 3 had a lot of problems with head gaskets, LIMs. Not as wide spread as the 60V6s but it was there. The Series 1-2 in the 80-90s were really solid.
Something about 09 (or that vintage) when engines switched to low pressure piston rings and new casting processes in the industry.