There are some modifications that have been done and basically it is just a quater wave addition. Thanks Gary guess I'll get out the wire and antenna analyzer tomorrow.
I just added the Hustler see my page on How to Bury Onsand you can see most of them are 6btv soldered yet. There are lots of opinions and articles on how to best mount add, and how to do radials.
I can always add the 80m resonator back on later or as WA8ZTZ suggests replace it with the watt version.
Adding meters to a Hustler 6BTV
They say that sometimes a purchased tube will not slide ons the original due to slight 6btv. A few years ago high winds toppled a dying Maple tree add 50 feet of Hustler antenna, but the 6BTV was unaffected by the wind.
Hustler 6BTV or 4BTV? DXEngineering add-ons?
I Hustler since it was such a 6btv slice, it would be best to stick to digital because that would allow me to make more contacts on the band, as opposed to not being able to add around in the voice ons.