I have the same plastic one you have, I to don't care for it, and it's definitely not worth the $20 it cost to buy it.

I'll be using the aluminum bolt on reservoir from a medium duty GM truck, or from a P30 Chassis. Remove it from the master cylinder, weld or plug one small hole, and drill and tap the two others for 1/8" NPT, and there you have it, a professional looking remote reservoir for your MC, at next to no cost.

I'll take a picture if interested?

Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-