Well let me start by saying I don't know, but I really doubt it. What 1994 chassis are you refering to? Chevy/Dodge/Ford/Nissan/Toyota etc.? An S-10/S-15/Sport/Ranger/Tundra/Tacoma? A half ton C/K 1500/F-150? Or????? Need more information before I can give an intelligent response. In any event, I will say that I don't know of any chassis manufactured in '94 that a '55 2nd series - '59 Chevy truck cab will be a straight forward bolt on. The mount points for the cab on the frame will most likely not line up without at least some modification.

For starters, I would measure the width/leangth of the frame rails to see if it is even close to the same, and would also need to measure from the center points of the wheels (leangth wise) to see if they are also close to the same. I would also measure from the center point of the front wheels to the leading edge of the frame rails, and from the center point of the rear wheels to the trailing edge of the frame rails. If all of those measurements are close, measure the leangth from the leading edge of the frame to the motor mounts to get some kind of idea if (and how much) I would need to make mods so that the engine isn't too far back/forward. If they do need to be moved, also check to make sure that the tranny cross member can be moved to the new location to compensate for the move without causing interferance or determine if I need to build a different cross member so that it would work. I would also measure to determine if there will be enough clearance for mounting things like master cylinder/brake booster where I would want them and also verify that there is going to be enough room and available geometry to connect the steering column to the steering box.

I have probably missed a lot above and others can fill in the rest, but just off the top of my head, that's where I would start.

I have a feeling though that I would have much more luck and much less work ahead of me by simply buying a Mustang II IFS kit and modifying a 55-59 chassis and being done with it.

Good luck on your build,
Dutch