Which Tamiya 'implements' for opening new 'panels'

[fiatboy]

New panels like a hole in a hood to make room for a supercharger, for example.  Actually I am building a Tamiya Countach and I want to open a couple of panels in the rear deck so as to view the engine detailing, such as it might be (plug wiring and detail painting).  Naturally I would use clear acetate or clear styrene to fill in the 'holes'.  I have been on Tamiya's website and they have a bewildering array of 'cutting implements',  like p.e. blades and even needles!  Can or will anyone help me out here?  Thanks

[Belugawrx]

When I open doors and such, I just use the back of an old #11 blade, slowly carving thru the plastic.

If there are no panel lines to start your surgery, Dymo tape works well as a guide.

[fiatboy]

Thank you, Belugawrx!