For the 150.00 difference in price.. you really cant go wrong with the Trans from Lonnie, especially if you are planning to sell the car.
It will make a good selling point that you have the best tranny available in the car already.
otherwise.. be ready to get "beat down" on the price you are wanting.
Remember that you publicly announced the car "has problems" when you set the price you want to get, people around here aren't likely to forget such a post..and that you save 150.00 and got some other tranny rather than "THE TRANNY" for your car.
Remember resale on Mark 8's is "CRAP".. you'd probably be better off keeping it and saving yourself from the "grief" of sale.