The Hydraulic Reference with Fluid arm should be worth a bit I reckon and IIRC, Michel did a platter upgrade which was well worthwhile. Fit an ADC XLM or anything good from this era and you could have magic.... My next cartridge project will be a V15III with Jico SAS stylus, as the VN35HE ou-performed a standard V15IV as I remember...
The thing with all these "iffy" but good decks from this period is not to over-load the arm or record with modern low-compliance cartridges, as the result is disaster usually IMO..

