Congratulations on your new sailboat and welcome to the forum!!
Your manual said the traveler was optional and there is a diagram in Figure 12.11 of your manual. My Hunter 31 traveler was on the cabin ahead of the companionway and I liked it there since it did not take up space in the cockpit movement. Other Hunter 27 owners will have an opinion about traveler location. Lots of traveler suppliers............Garhauer, Harken, Lewmar, Ronstan, etc. Link to one possible used traveler supplier below. If it was my boat I would purchase new so it fits your sailboat. Please post a photo of your project.
Shop this category for; used jib tracks, used mainsail track, used track stops, used headsail track, used mainsail track
www.usedboatequipment.com