Burchett Rule Question - Parts of the brake booster?

It doesn't really matter one way or the other for me - the car is already under $2000 when including these parts and it's also a bone-stock 1990 Saab Convertible with an automatic transmission, so it ain't going to win any awards, if you know what I mean.  But...  Just because I'm curious I thought I'd ask:

The Saab uses a hydroboost-like setup for the brakes where the power assist is not from vacuum but instead uses a electric pump to pressurize the brake fluid, an accumulator to hold a few thousand PSI of that built-up pressure, and a pressure switch to tell the pump when to run.   The pump is fine but the switch and accumulator were failed so I replaced them with OEM-style replacements.  They're both attached to the master cylinder and are pretty well required for brake function.

Would those components be budget-exempt just like "Brake friction materials, lines, calipers, master cylinders, boosters, rotors and drums"?  I would assume that these would fall under the "boosters" category, but I'm not replacing the whole thing since there isn't a single "booster" on the car, but these bits that are bolted up to the master cylinder.

I'd say exempt.

Exempt

Exempt. Please show up with safe brakes. 

Thanks for the confirmation!  We're making a 1,600 mile round trip with this thing so having properly operating brakes was non-negotiable anyway.  I even ponied up the extra cash to replace the ABS computer and diodes to ensure that system is fully functional as well.  I remember Michael telling me that his dad always said something along the lines of not running is annoying, not stopping will kill ya.