A "non improved" version of the SME 3009/II would be in keeping with the use of an SPU. The only worry is that with time the rubber decoupling bush of the counterweight stub can perish (not helped by the offset balance arrangement of the VTF adjustment yard-arm, used to equalise the pressure on the knife edge bearings). Also the knife edge bearings and yoke is made of steel, not the less desirable plastic offering of the "Improved" version and its successive variants.
You can use an improved version of the SME with an SPU if you use the heaviest after-market counterweight offered by SME, but they are rare.
If you can put up with a 4g VTF for the SPU, then the cartridge can be counterbalanced using the standard counterweight.

