I look at both links and doesn't seem to work. Mod'ing them to fit isn't a good plan.
Go to junk yard and get from other old GM cars w/ same plug/mounting.
Note that other cars have different values of resistors and affect blower motor speed. If blower is too slow can cause resistor overheat and AC/heater performance issues.
Some may have same plug but resistors are wired different and speeds are wrong for switch settings or worse can short the system. So if you can't check the wiring then likely don't use resistors from another car line.
Before you ask... No, You can't get resistors values for most vehicles because GM etc never publish data for public use. Doesn't matter to most because often can't measure < 1 to 5 Ω accurately w/ most meters including big names like Fluke. (Is likely only on specs for the order to resistor manufacturers.) Blower and Radiator speed resistors are mostly < 1Ω and High watts. most are rated 50w or more.
Fiero AC packs have 3 resistors. Non ac Fiero and even some AC cars have different speeds, 2 speeds for resistors. (Highest speed uses Relays and 12v directing to blower)
If resistors are bad then Blower is likely bad or dead and/or have other problems like crap in the box to iffy power/ground(s).
See my Cave,
Electric Motors------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)
The Ogre's Fiero Cave
