So here is the situation. I have an '88 e250 with a c6 and 3.54's. I also have added a DNE2 aux O/D. I currently have a Banks turbo kit sitting in my garage that will be added this year as well. I currently have 260K o on the clock and plan on driving the van until at-least 500K. I am thinking about an e4od swap.If I did it I would keep the aux O/D and use a stand alone e4od controller. So I am wondering id it is worth it. Here are some key facts: 1. I do tow with it. I pull a 30ft TT multiple times a year, plus I tow my car to the track with it. I am thinking the addition of a turbo would make power a non issue, but with an e4od swap I could switch to 4.10's (or even 5.13's) and still have lower hwy rpms in double O/D than I do now. So better towing ability and better in town mileage. 2. I put on a lot of mileage with my 3 boys playing travel soccer. This can mean 2000-3000 a month. Plus a lot of miles for a vacation in the summer. I live in Indiana and visit family in south Texas. So basically , I could put a lot of miles on so my mpg could help money wise. I know that the e4od had some issues when it first came out. Mostly it was related to original weak components that have been fixed since and faulty electronics they I would fix by using a stand alone controller. So do ya'll think it would be worth it for the drive-ability and the increased mpg?