Ezgo powered by Yamaha 2 in 1 project

[Purefireok]

Not sure if this should be in the Ezgo section or Yamaha section. So this is the current project. I think it may be an 875 series. It's Ezgo with what seems to be a G2 series motor. Unfortunately the ID plate has been painted over but the previous owner believes it is a 1990 model. The motor fortunately still had readable numbers J38 027593. Wiring needs TLC and I think the ignitor is bad at this point. But, I have a fully functioning 4 foot by 9 foot aluminum rollback wrecker bed and fabricating a skid type box to put on and off that will make it a fire engine, complete with a rooftop water cannon. I'm wanting to do the hei conversion to simplify things. I'll also be installing a fuse block as it seems there isn't one fed by an 8 gauge wire straight from the battery. Then all the led lights, winch and accessories will be fed straight from that. Also in search of a proper key switch as the current one is mangled and uses a screw driver for a key lol and may or may not be working right. Needless to say, my crazy @$$ stepped into a different world with this one 😂 Any info or tricks are greatly appreciated. I'll be using the wrecker version for all sorts of work and fun and the fire truck version for fun and shenanigans.