Rear Brakes: 510 wheel cylinders?

[Tom Aiken <tom.aiken@gmail.com>]

Hello,

I have a 68/69 (vin/title) 1600 that was parked for ~10 years by it's
previous owner.  The wheel cylinders for the rear brakes are seized. 
I understand from the http://www.311s.org/ parts interchange list (and
from searching the 311s.org forums) that the drums are the same, and
the shoes will fit, but the cylinders are not a direct replacement
because of metric fittings.

Is there any other difference?


For the $60+ savings I can buy a flaring tool and some new fittings
for the lines and still be ahead.

Thanks, 

Tom