I set up my 7 last year with an IFR GPS with the plan to use it for my checkride ... an IFR-legal, GPS only aircraft.
Recently we re-confirmed things with my DPE, and got the following response, that he got from our FSDO:
On 02/28/2022 the Office of the Chief Council (AGC-240) issued a memorandum rescinding two legal interpretations pertaining to instrument training requirements under 14 CFR § 61.65. Specifically, the memorandum clarified the instrument approach procedures that may satisfy § 61.65(d)(2)(ii)(C). Although the Instrument Rating – Airplane Airman Certification Standards (ACS) was referenced, it did not alter the testing requirements of Instrument Approach Procedures as specified in Area of Operation VI and Appendix 7 of the ACS.
The ACS directs the evaluator to test an applicant on three different kinds of approaches, consisting of one precision approach and two non-precision approaches, which must use two different kinds of navigational aids. Therefore, conducting three GPS approaches during an instrument rating practical test would not meet FAA-testing requirements.
This issue is not the kind of approaches (we can get 3 with GPS) but the number of different navigational aids.
Based on this guidance, I installed a GNC-255 into my G3X+GPS175 system, and now have cat whiskers under the tail, a VLOC nav receiver, and an additional comm radio. About +6 lbs to the W&B. Now I can shoot the ILS with the big kids.