Ok.. I'm going to recap so that I'm sure we agree on what is going on.
You have HPT and TT.
Your current bin is HPT
You would like to use a different bin
Your HPT is open for your vin only.
Your new bin is not your vin (because I know where you got it)
And .. you'd like someone with a DHP to change the Vin on the new bin to your vin and then send it to you so that you can use it with your HPT.