diesellibrarian
SILVER Star
60s have a LSPV, it's under the Master cyl.
Here's a replacement for FJ62s
Load Sensing Proportioning Valve LSPV for Land Cruiser FJ62
Load sensing proportioning valve (LSPV). Prevents rear brake lock-up. Fits: '88 to '90 U.S. spec Toyota Land Cruiser FJ62 8/'80 to 8/'87 non-US FJ60, HJ60, FJ62 Corresponds to OEM part # 47910-60060.www.cityracerllc.com
60s have a proportioning valve, yes, but it's not a load-sensing one like in the 62.
I deleted my LSPV because it makes for a much more complex system, since it requires a return line to the junction block on the front passenger frame rail.
I was replacing a bunch of rusty line anyway, so I just went with a Wilwood adjustable proportioning valve. It's not too pricey - around $100 I think. City Racer sells them as do most speed shops (though they're less likely to have the metric fitting version).
I fabbed up a little bracket and hung the PV below the MC (using two of the booster mounting studs) where it's easy to reach and adjust. So far the system is working well!