The DJR Full-body V2 is nearly identical to the "Max-Mass" heatsinks that I made for Igor's builds. If I remember correctly, Igor's specification had a little projection that extended back into the battery-compartment, which requires the removal of the "pill" from the battery-tube. So the short-answer is "yes", they are the same, nearly.
Hey Barry how are you doing? I was wondering, is the Dorcy kit you offer w/ H.S. the one Igor calls the "Max Mass H.S.? I may want to get another one or two but currently I am struggling to try to get Yobresal's Viasho 473 nm unit that is doing 75 to 100 mW! So, yeah, kind of tapped out atm. Still, if I can I would like to get a set or two. Best Wishes! -Glenn