I have an earlier (3.8) version in my El Camino. (not the Buick 3.8 but Chevy's version which is a 305 minus 2 cylinders)It's a relatively trouble-free engine, and there is a lot of parts interchange with the corresponding V8, but it's also pretty much a dog of a motor, even with all the emissions junk removed. The later EFI versions are better, but it just doesn't seem to be a very smooth performer, and power is just adequate. Of course, maybe I'm spoiled after too many L6s in various cars over the years.
