The 250 has had quite a bit of work done to it. The pg seem to be very slow starting off so I thought that if I was going to change the trans, then the 200r4 would be the best. But that seems to be a lot work trying how to hook up the TV cable, to a holley 4 barrel that is sitting crosswise on the intake and get the wiring for the lockup convertor. You mentioned a non lock up convertor. Is this still an overdrive trans, and how good are they, what cars did they come in. Thanks for the info