Reputable 340 Rebuild Kit

That would be a good reason to stay with 4" bolt pattern. the KH brakes will have it and an 8 3/4" will also...
These KH are giving me a rough time... and i havent even purchased them !...

Which would be the safer of two options if i put the six pack in:
KH to stay period correct

Or

A decent to better modern entire front disc brake setup that i can buy and have a plug and play setup