OK I picked up a DOUG NASH OVERDRIVE UNIT for a turbo 400 transmission that was in storage for the past 9 years this was bought brand new and never installed I was going to see if it would fit in my GN and go with a turbo 400 trans. but now I am thinking of selling it . What do you guys think, WILL it fit 1st?? and what is it worth to someone?? I would think this would be the ultimate set up for the gn a super strong turbo 400 with OD for way less than a built 200R4. jUST TRYING TO GET SOME INPUT.