Sorry but I don't think that would work at all without making the can taller. I own a roughly 10 inch tall can bubbler in a similar fashion which is a circ to turbine by a US maker. The turbine adds a lot of stacking wherein your problem lies. My tube actually has the downstem flare out about halfway down where it is worked (say halfway down the downstem), which adds to the stacks and actually seems to control the pull. I never get any splashback using this piece surprisingly (unless pulling with very high water levels as hard as possible, and works so well for me it's too hard to part with). the mouthpiece being removeable/worked lets me use a variety of options like whip or otherwise. Honestly this piece works and looks great, I'd be a little disspointed to see it go to china copybin, but such is life haha. Gotta share the love, and tbh when I had both my sovereingty kingstem (nearly 16-17") and this tube, and to be honest the kingstem was only marginally smoother going back and forth, most likely because I had the larger can size on the kingstem (can't remember the name of the size atm) so it let the vapor or smoke cool.
Sorry the pic is a bit dirty (and yes I noticed both my paragraphs start with sorry- I'm canadian damnit!) and a bit watery, i just changed the water as this is my go to smoking piece as it has the most diffusion of all my pieces (including my toro hex-13arm double micro). If it's hard to see it is a finely cut turbine where the bottom seems to meet the can, and the bottom circ is slits which adds to the stacking.
TLDR: if you want to add a turbine, shorter =/= better, this rig will stack to the very top of the can with no splashback into the mouthpiece (and if youre wondering, it is just above this pic, 18mm joint removeable worked, can upload more if interest arises).
for record- the end of the numbers on the inch side ends at 4 inches, I'll go ahead and measure the total size of the can if anyone wants me to but I believe it is roughly 8-9inch, with mouthpiece on it is ~13", but having a removable lets me also have the option of throwing a extreme q whip attachment on there for laid back vaping