This is what my BOM looks like right now if I would replace all tantalum with electrolytic:
Filter Board
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C505 & C506 (1µF, 35V, P3, tant); Mouser No: 647-UFG1H010MDM, UFG1H010MDM (1µF, 50V, D5, L11, P2)
C509 & C510 (100µF, 6.3V, D8, P4); Mouser No: 647-UFG1E101MPM, UFG1E101MPM (100µF, 25V, D8, L11.5, P3.5)
C511 & C512 (1µF, 35V, P3, tant); Mouser No: 647-UFG1H010MDM, UFG1H010MDM (1µF, 50V, D5, L11, P2)
Tone Control Board
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C302 & C305* (1µF, 35V, P3, tant); Mouser No: 647-UFG1H010MDM, UFG1H010MDM (1µF, 50V, D5, L11, P2)
C305* & C306 (100µF, 10V, D8, P4); Mouser No: 647-UFG1E101MPM, UFG1E101MPM (100µF, 25V, D8, L11.5, P3.5)
C307 & C308 (10µF, 35V, D6, P4); Mouser No: 647-UFG1H100MDM, UFG1H100MDM (10µF, 50V, D5, L11, P2)
C309 & C310 (3.3µF, 35V, P3, tant); Mouser No: 647-UFG1H3R3MDM, UFG1H3R3MDM (3.3µF, 50V, D5, L11, P2)
C311 & C312 (33µF, 10V, P4, tant); Mouser No: 647-UFG1E330MEM, UFG1E330MEM (33µF, 25V, D6.3, L11, P2.5)
Function Board
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C401 & C402 (10µF, 10V, P3.5, tant); Mouser No: 647-UFG1H100MDM, UFG1H100MDM (10µF, 50V, D5, L11, P2)
C411 & C412 (47µF, 35V, D10, P6); Mouser No: 647-UFG1H470MPM, UFG1H470MPM (47µF, 50V, D12.5, L11.5, P3.5)
C416 & C417 (4.7µF, 50V, P3, tant); Mouser No: 647-UFG1H4R7MDM, UFG1H4R7MDM (4.7µF, 50V, D5, L11, P2)
C421 & C422 (1µF, 35V, P3, tant); Mouser No: 647-UFG1H010MDM, UFG1H010MDM (1µF, 50V, D5, L11, P2)
C425 & C426 (10µF, 10V, P3.5, tant); Mouser No: 647-UFG1H100MDM, UFG1H100MDM (10µF, 50V, D5, L11, P2)
Power Board (NA06399)
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C701 (220µF, 25V, D13, P5); Mouser No: 647-UFG1V221MPM, UFG1V221MPM (220µF, 35V, D10, L20, P5)
C704 & C705 (100µF, 80V, D16, P7.5); Mouser No: 647-UFG2A101MHM, UFG2A101MHM (100µF, 100V, D12.5, L20, P5)
C706 (47µF, 16V, D10, P4); Mouser No: 647-UFG1V470MPM, UFG1V470MPM (47µF, 35V, D8, L11.5, P3.5)
C707 (100µF, 50V, D13, P5); Mouser No: 647-UFG1J101MPM, UFG1J101MPM (100µF, 63V, D10, L20, P5)
C709 (1µF, 50V, D5, P3.5); Mouser No: 647-UFG1H010MDM, UFG1H010MDM (1µF, 50V, D5, L11, P2)
C710 (1µF, 50V, D5, P3.5); Mouser No: 647-UES1H010MDM, UES1H010MDM (1µF, 50V, D5, L11, P2)
C711 (100µF, 6.3V, D10, P4); Mouser No: 647-UES1E101MPM, UES1E101MPM (100µF, 25V, D10, L16, P5)
Electrolytic Capacitor Board
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C802 & C803 (4700µF, 50V, D35, L62, P20); Mouser No: 647-UKW1J472MRD, UKW1J472MRD (4700µF, 63V, D22, L50, P10)
Main Amp Board x 2
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Tr607 (C458); Mouser No: 512-KSC1815YTA, KSC1815YTA (50V, 80MHz, 400mW, 150mA, 120hFE)
C601 (1µF, 50V, D5, P4); Mouser No: 647-UFG1H010MDM, UFG1H010MDM (220µF, 50V, D5, L11, P2)
C609 (47µF, 50V, D13, P6); Mouser No: 647-UES1H470MPM, UES1H470MPM (47µF, 50V, D10, L20, P5)
C611 (100µF, 50V, D13, P6); Mouser No: 647-UFG1H101MPM, UFG1H101MPM (100µF, 50V, D10, L16, P5)
C615 (220µF, 35V, D13, P6); Mouser No: 647-UFG1H221MHM, UFG1H221MHM (220µF, 50V, D12.5, L20, P5)
*Note that the schematics of the Tone Control Board in the service manual got two instances of C305, one electrolytic paired with C306 and one tantalum paired with C302.
Ps. I went with the Nichicon UFG-series instead of KZ because I had a hard time finding sizes that would fit from the KZ-series. I think all the ones I picked from the UFG-series will fit the boards (the ones on the Electrolytic Capacitor Board are from the UKW-series and might need some custom mounting and support). The non-polarized are from the UES-series.