Most clutch master are not a bolt-on, not because of bore or stroke, but because the Pantera uses an odd-ball bolt spacing. Almost all aftermarket clutch masters are 2" center-to-center for the mounting studs while the Pantera used about 1.85"center-to-center. So one either remachines the brand-new master (if there's clearance for the nuts to turn afteredoing it) or uses one sold by the vendors, who invested time & money to get them built correctly. That mounting area just above the accelerator pedal is not easily accessed either, so mods are difficult at best. There are issues with getting the hydraulic line adapted too as aftermarket units route the output line differently and do not use European bubble-flairs.
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