Not exactly a mod, but highy recommended if you want to save
time bleeding your brakes.
have a built in check
valve that lets you do one man brake bleeding without worrying about
sucking air or old fluid back in to the caliper in between pumps.
The dual piston calipers use 7x1.0, and 1G rears use 10x1.0.
I'm pretty sure the 1G single piston fronts also use 10x1.0
(I replaced a clogged rear valve with the valve off a single piston caliper
before and it worked fine, so I guess they're the same). No idea what
size 2Gs use. Mach V
has kits for DSMs .... you can get 1G, 2G, or
combo for cars with 2 piston brake caliper conversions.
Amazon also has them for sale but you'll need to figure out the
correct part number yourself.