Glarry hasn't had much of a selection of fretless basses for the last few weeks. As you noticed, they don't seem to even offer a J-Bass in fretless form. I bought the Glarry II upgraded J-Bass, and ordered one of those gorgeous super cheap, fretless J-bass maple necks on ebay. I also bought a set of neck shims from StewMac, and a set of Gold-White tape LaBellas. Also bought a gorgeous blue pickguard. Kindly wish me luck.
well then, best of good luck!
i know nothing of the glarry II models (except what is advertised) as all of mine are the "original" models. since i only use the bodies (because they're lightweight, poly-finished) i have to supply the other parts --- and i go for the lightweight hardware, too, with some exceptions --- but i'm using the usual suspects in the 'premium' categories (schaller, hipshot, gotoh, etc.) for my assemblies.
there are folks on this forum who poo-poo those ebay necks, but most of the detractors have no personal experience with them and the very few that do apparently aren't clever enough to resolve issues when they find them. know this: the side dots on those necks are in the fretted positions (all of mine were!) so you'll have to relocate those. other than that: all six of my chinese-made ebay necks have been stellar! i'm
really picky about my EB necks (i've only played fretless for 50 years, most of that full-time musician) and they're just as serviceable as any other neck i've ever purchased (e.g., allparts, eden, etc.).
check out the glarry club (as noted above by @B-Mac) as there's a lot of great info there...scattered among the frivolous stuff --- but you can chime in with questions and get experience/perspective/advice.
again, good luck with your assemblies and mods --- and here's some pics of a few of my glarry-based players (these are serious instruments) just to get you excited about your project! FWIW: all of them sport the necks we're referencing!
