Can you borrow one and try it on your truck? Or, better yet, try yours on another truck?
I can tell you for sure, don't pay $400, look on ebay or something.
The 'Mule' 96 2WD F250 EC/LB auto PSD, semi-retired.
The 'Old Gray Mare' 97 dually cc, rest in peace. To be resurrected by a fellow FTEer!
The 'Babe the Blue Ox' 97 dually EC,T4 s366,DI IC,stage I's,Hydra,studs,springs,pushrods,swamps HVHF IDM,John Woods auto,FS2500 oil bypass,3"DP-4",SD dual tensioner,6.0 trans cooler,turbo silencer,adrenaline