HMT refers to the paint Honda Movistar Telefonica, The 4.2 is the base model elite 14, The 3.4 is the same as your 2.5, the only difference is 3.4 has the 6.5" wheel kit on it from the factory.
You were right. I saw timelesswhite's 4.2 for sale in the classified long time ago but never realized. From the pullstart cover, I though it's 2.5 but has more HP. Thnks for clearify.