Yep, the Ford 2.8, 2.9 and 4.0 are all 60° engines and fit nicely in the Samurais.
The 2.8 and 2.9 both have their issues, but they're not bad and far better than the Chevy 2.8.
The 4.0 is the best of the three and they make good power. The downside to all three is the weight, they are cast iron blocks and heads, so they are heavy for v-6s.
As stated above, the 4.3 is a 90° engine and it is wide. A very poor fit for the Sami engine bay, but I've seen a number of them done.
The 2.8s fit nicely in a Sami, but they are still a sucky 2.8 with the counter balance shaft.
I've always wanted to do the little Duratec 2.5 V-6 that was in Ford cars, very light weight, a buddy and I had lifted one that was laying in the junkyard.
Another hot v-6 would be the Duratec 3.0, all aluminum and the baby Jag version put out 232HP. It was somewhat popular with the sand buggy crowd for awhile due to it's light weight and good power output.
The Ford SHO 3.4 V-8 used the same bore and stroke as the 2.5 Duratec, just two more cylinders added, so it would've been a cool swap too. iirc the SHO 3.4s had cam issues.