Boxing a 47-53 1/2-Tips, Parts

[duwem]

I bought a second nice frame to do all my suspension/frame (work C4 vette front and rear, box, trans crossmember, engine mounts etc) on while I drive my truck
I want to box the frame. Thinking Progressive Automotive's full length boxing plates.

http://www.progressiveautomotive.com/Boxing.htm

1947-55 (1st Series) truck (1/2 ton, Short bed type)

Full Length ....FL-CTE......$269.00


Would I cut everything off and box front to back then weld in the crossmembers I still need(radiator mount and one rear one) I would keep temporarly supports in to keep everything straight?

Would the frame be much stiffer with boxing plates, or should I consider just building one out of rectangular tubing? Want the truck to handle well in corners and a stiff frame is a component of handling. I like the idea of using the stock frame since all the dimensions/mounts etc are already in place.

Also thinking of using progressive's trans crossmember. Looks like it would help stiffen up that middle part of the frame:

http://www.progressiveautomotive.com/xhmember.htm

1947-55 (1st Series) truck (1/2 ton, Short bed type)

Tubular Style....XT-CTE......$369.00


The vette front and rear crossmembers I plan to use would come from Flat Out Engineering:

http://www.flatout-engineering.com/products.html


Want to keep the master cylinder down on the frame.

How does this sound? Would you do this or recommend other parts/methods/ideas? Any trick ideas for running wires, brake/fue lines, etc through boxed frames?