Either way, you've got a lot of work.
Easiest method to a working centaur from that game in the pic that is actually feasible:
Buy the Centaur, find a Mr & Mrs Pac-man project, use the boards, cab & displays from the Mr & Mrs Pac. Paint and stencil the Pac cab with Centaur stencils.
Make a poster translite of Centaur II's translite (since mr & mrs pac uses a florescent bulb). Cen II BG would be hard to find.
Get a CPR Centaur PF.
Get a repro SIA board for delay.
Clean all the parts, use that centaur PF as a donor for assemblies and whatnot only.
Sell that Centaur PF to someone for wall art or something.
It would be a little cheesy, but you could technically get a working Centaur II look-alike out of it for less than $1000 and a ton of work, if you can score a Mr. & Mrs Pac for less then $500, which you generally can. This was my thought process when I saw this game, having restored a Centaur II & shopped a Mr & Mrs Pac-Man.
If it turns out the PF on the Centaur isn't toast, you could try to touch-up and clear it, but it is still yellowed.
With the Mr & Mrs. Pac idea, you could part out the pac PF too and recoup a little. If you made your own head and bought boards individually, you'd be in deeper than a Mr & Mrs Pac for sure. Depends on how much time and $$$ and your level of commitment.