There is not a left and right side to those assemblies.

Watch the direction the oil reservoir faces: to the rear on the left side and forward on the right side.

If you do not find any take off HVSS assemblies, as a last resort I can send you enough new parts to build 2 HVSS units minus the suspension arms.

I have all the spare suspension parts, except the pricey suspension arms to assemble your own 2 units.

But buying just 4 suspension arms (2 per unit) might be tough, because they are only sold as a complete set of 12 by Tamiya USA: Tamiya part number 5415049 (around $3.00 each).

Try Bob at ETO for 4 suspension arm parts #5415049, he is a great source.