terry.sc wrote:It already has the battery holders there, the batteries are supposed to be held in by glassfibre tape, for those who want to make sure the batteries don't come out, or using velcro straps for those of us who can't be bothered messing about with a new length of tape each time.

Somehow it dawned on me one day too, and I got the Yokomo tape for the pack already but forgot to update the post.
Momo
(means peach in Japanese)
I got a battery box for side by side cells (from a triumph) that would fit. but don't plan on putting it after all. I don't plan switching to saddle pack either: since I share the sticks with other cars also.
I'll try to shoot some pics of the updated status tonight: got a new body mounted but still miss an ESC for it
PS: probably mentioned this before: this shop has a NIB YR4-M2 on the shelf if anybody is interested.
From the descriptions in the link by Momo, I think it is the J version: though there's no English mention of of anything along this line. It has 4 micro shocks, woven carbon chassis and a 5th shock over the top. Also has a print or sticker mentioning the championship title the car won in the US: indoor onroad, or carpet something. It would be a saddle pack configuration as I remeber (probably the reason I left it on the shelf)