You could probably also take a standard deep socket that's too large in diameter and have it turned down to a usable diameter at a machine shop for about $10 or so. I have a really deep socket just like the Burger one (looks just like it but chrome) that came with a set of wheel nuts for my S2000. I may see if it'll fit in the spark plug holes of the 335 and if it doesn't, I'll just see if one of the machinists at work can turn it down a bit for me. I'll also probably stick some rubber hose inside it to grab the spark plug.
02 Honda S2000
-741 whp 471 wtq (dynojet) @ 29.6 psi on e85; now on 34 psi, 800+ whp.