I can catagorically state that mid-90's RWD 3.8's DO NOT have a Windsor
bellhousing pattern.
I have a 91 Suercoupe trans and it WILL NOT bolt to a 302, believe me I tried.
But I can also state that the trans he has won't bolt to a Ranger 3.0 either.
The 3.0's ALL have the same bellhousing, the FWD 3.8's were built on blocks
that used the same pattern.
The RWD 3.8's? early I don't know, but I know that the '91-up 3.8's
have a different from windsor bell pattern.
It may well have a Modular bolt pattern, I don't, I don't have a
modular block to compare the trans to...