Motive products are available at the usual hot rod suppliers (like Summit Racing)
Works on my 46 with underfloor Master, though I have a modern split system m/c.
I imagine It will work fine on a remote fill system, just be aware the remote hose and all connections need to reliably hold 10-15 psi.
Motive has a number of master cylinder adapters and options, you need to dig thru and get one that best serves your system.
The system is sending brake fluid under pressure into the m/c, so if you have enough fluid in the Motive tank you don’t think about the m/c getting empty.
Chuck
