Could anyone recommend me Electronic Distributor Conversion Kits for 1963 225 valiant?

If you get the petronix 1, get the petronix 3 ohm coil while you're at it.

Then takeout/bypass the ballast resistor.

Yes be sure to use the correct coil for the Pertronix kit used. Also make sure to bypass the ballast if required! I love my III and flamethrower III coil!