Re: Bare Knuckle Mother's Milk equivalent
Based on specs, descriptions, and most tellingly the grey fiber bases, the middle and neck are Fender CS69 knockoffs.
The bridge is an overwound addition to the set. And pretty much the only thing BKP changed.
So, the cheaper/easier to get equivalent is probably:
1x Fender CS Texas Special, bridge... or 1x Fat '50s if you want something slightly milder
2x Fender CS 69's, mid and neck
RWRP middle if you want hum cancellation. Fender CS 69's are otherwise identical/positionless.
If you can't find em separately for cheap, get a used full CS69 set, and you'd probably be quite happy too. Possibly even happier than with the BKPs.