trans cross member

Dose some one make a poweglide cross member for a 78 F100 or am I having to make one  

Kind of an odd combo for a manufacturer to tool up and make 'em.  Various engine type and placement variations would probably make for "sluggish" sales numbers for such a unit.  

It's a pretty simple deal to make or modify one that's specific to your truck.  Sounds like about an hour's work in my garage.

You will more than likely have to custom have/make one or do some mods to yours