primož,
if you are looking to combine 1/35 figs with 54mm ones, I would say you pronbably shouldn't do it. They are not the same scale. There would likely be too much discrepency between the two scales to get away with it. Besides, most 1/35 figures are consistent in their scale, where some 54mm figures vary quite a bit in "actual" scale (usually to larger). HTH,
Jay H.
OKC