5 speed swap, wheels go backwards even in neutral?

[Dithrain]

Hey guys, I just finished a 5 speed swap. Problem is

A) my transmission only goes into 1st and 2nd; not 3rd or 4th (almost goes into 4th) and it doesn't even go right so I can put it in 5th or R.

B) it's on jack stands, and when I put it in gear, feather the clutch and give it gas, it stalls no matter what. (Almost like the brakes are applied.)

C) (this is the crazy part) even in neutral, the wheels are going backwards, at average reverse gear speed.

Anyone have any ideas? I did swap the ECUs and I have no CELs or anything.