You won't be gettin' it from me, but HM does have a whole selection of 2.5" hardware to convert any machine.
Since your TM has a 2.5" ported Blower you would definitely benfit from continuing that 2.5" pipe as far down the line to your wand as possible...56% more is 56% more no matter how you view it.
If you only need two lengths of pipe for domestic jobs then make one of them 2.5", if you routinely pull out three lengths, then make 2 of them the larger, you absolutley will be amazed at teh additional recovery and dry times, it's why I promote it so heavily.
Then set your vacuum releif valve to 15"hg or the maximum your Blower Mfg. supports, and make sure the revs are up around maximum for the engine and pump.