Here's one that I bought and installed in an OLP this month: http://www.ebay.co.uk/itm/1810014632...84.m1497.l2649
I was scrolling through and I noticed their 4-string was endorsed by Jimmy Lloyd Ray, the blues player who's an e-chum of mine so I checked with him and he advised me to go ahead. Although you'd be getting it over from England, I highly
recommend it for the silly cheap money. It's massively better than the stock OLP and I prefer it to the Wilkinson (good but bassier and not so 'ray sounding) that I have in a four-string. The Warman I installed all in one go with a Warman dpdt on-on-on (you definitely want this as well) and an EMG BTC (not all that necessary but lying around in my parts bag).
The Warman pup had a bit of excess wax around the edge that I scraped off with a fingernail and pre-wired in series with tinning not up to my standards but don't let minor cosmetics put you off. In any case, I stripped it back to wire it to the dpdt for series/single/parallel (their site has wiring diags and you can PM me if unsure).
In parallel, it's punchy and bright in a good way while the series has more oomph and the low B does that trouser-flapping thing. Single coil (which, on my Telebucker mod, sounds much like parallel) is also worthwhile - not far off a Jazz bridge tone but its placement is obviously different.
Josi Warman responds to all emails (at least three comms just over the £3 switch) and, apart from a brand new CTS vol snapping, everything worked first time. Can't fault the sound at all, even though the old strings won't be changed until I've replaced the emergency vol with another CTS. I'm pretty sure you'd be happy with it, but I've seen Josi offer return for refund on a guitar forum when a poster was considering one.