Well guess what, I needed the longer positive cable after all!!!

Yellow Dog told me I don't need it and I have a 04 base, manual.
The aluminum adapter plate is good quality(for an extra $20 over the plastic version, it's worth it IMO), and won't hurt to get the thumb screw set as well, makes it so much easier to remove the cowl vent to replace the cabin filter, etc.
Install is pretty much a breeze. It came with 4-5 pages of instructions but the install is straight forward on its own. Don't have to be a qualified mechanic to do the job. The Redtop (34R) is smaller, lighter than the factory battery - just perfect.
It was easy to deal with Yellow Dog over the phone, they processed & shipped the items to me very quickly.