I’m planning to modify a hard-wired Princeton to be both a Blackface/Tweed (and maybe even Brownface) amp in one. The blackface mode will be 100% stock. I’ve been working from this guide here:
https://guitar.com/guides/diy-workshop/rift-amp-modifications/
https://guitar.com/guides/diy-workshop/diy-workshop-rift-amp-mod-part-2/
I’ll post more details here soon, but for now here is my draft layout:
