What fits and what can be made to fit is a completely different story.
How much money do you want to spend?
How good are your fabrication skills?
What mods do you have/plan to have that make these transmissions unusable

Whats wrong with the neon tranny swap? What's wrong with the manually tranny? I consider these trannies to be just fine for their application. Mine auto is going strong being beat to hell for the last 10 years.
Ive had an extra tranny cooler on since just about day 1 and haven't every had a tranny problem.

1998 dodge avenger 4 cyl AT
Mods are:
Not enough