The "Fehrmann" Tigers were all slightly different, but in general they seem to date from the later part of the "Early Tiger" period. We would expect them to have the HL230 engine, for example, as an upgrade if not as their original engine.
And we expect them to have one specific feature that was introduced even before the HL230 : that is, the triangular access panel that was added to the rear engine cover.
But the CAD images of Takom's model show the earlier type of cover, with no access panel.