Hi, I used the 17pw15-8 because it supplied all the correct voltages and you could use some of the mounting holes. And I had it spare. I had a power loom for the 17pw and just used that. Cut and spliced the wiring making my own wiring loom. Tv is still going strong 2 years later. If memory serves you could use the original inverter connectors, but I would be doing a visual check before and making a wiring diagram before you start.
Only other thing I did was give the 17pw some new caps on the most likely ones to go.