the 2.5 fits the 4.0lt, but they are a tight fit to get in and out. thats on a 93. Are you sure the linkages have not siezed causing the motor to burn out. Might be worth looking at a breaker and buying the whole assembly,
just got the following from a parts catalogue ive got, looks like you might be out of luck
Looking at it again the wiper orientation appears to have been swapped over
Part number 55155 300AB MOTOR, Wiper 2001yr
Part number 4723 460 MOTOR, Wiper 93yr
some catalogues that you might find helpful
http://greatlakesxj.com/tech.html