Have a chat to Jonathan (Feline Guitars) about bridge parts. I was talking to him about it the other day. Obviously, he can source the BKP bridge assembly for you, but he also has various other possibilities up his sleeve :D
I've been looking into this sort of stuff recently. I nearly went for a Callaham "enhanced vintage" sustain block for my Roadworns. In the end I got some cold rolled steel blocks from a chap in the UK on ebay (£22). I picked him because he was the cheapest I could find at that moment for a "throw-away experiment". His "US standard" one fits the Roadworns - I've installed one in my 60s Roadworn so far... AMAZING difference in volume and just "more" (and you already know how "righteous" the guitar sounds anyway).
At first the change was so amazing that I didn't like it! But after resetting pickup heights and amp settings, I'll never go back! :lol: I would seriously recommend you replace the bridge block with a steel one on your 60s Roadworn - my 50s Roadworn is just aching to receive the second block I have, it suddenly doesn't sound as good as it did a week ago.
Where you get a block is up to you - it seems to me that Callaham, this ebay bloke, BKP, are all probably using roughly the same kinda steel... (although some folk's marketing materials seem to suggest that their's might have an extra "special-ness" about it :lol:). So I predict that the tonal change will be similar, the rest is down to marketing/price/name ... your choice! :D.
WARNING: If you do put one of the ebay guy's blocks in your Roadworn you do need a new arm, a vintage 10/32" screw, the existing Roadworn arm is 5mm and, er, well... it's not the right one... even if it seems like it at first... (I broke it off in the block when it got stuck!!). The Ad I bought from did point this out but I kinda misread/misinterpreted what it meant...
Anyway, I was discussing all this with Feline, and about my CIJ strat which is seriously in need of this mod (it has a zinc block and has a very dead-duck sound in comparison now), and I found he has access to various goodies/solutions at competitive prices. When I've figured out what I'm doing and got the cash together, I'll be going that route. If I was in your situation, with this project, I'd probably ask him to "go get me the BKP assembly", but he does have other options. I didn't ask, but I guess these could include aging of the visible parts...
Pickups-wise, I wouldn't hesitate to recommend ITs - that's what my 60s Roadworn has - but it's interesting to hear what PhilKing says. Once you're all "steeled-up" in the bridge department, the 62 custom set might be a better bet if you definitely like the Texas Specials vibe. ITs with the steel stuff aren't thin by any stretch of the imagination, but they are bright and hard - think Rory Gallagher, definitely. If you want a more "bubbly/delicate on the neck or neck/middle when the volume's turned down" (SRV, Hendrix), it sounds like the 62 set is the way to go... :D
