I wanted top pass on some useful information for those of you yet to be replacing your assembly drive ( A/C and alternator) belt and also the supercharger belt during a 3800SC swap. I bought the lower alternator re-mount and pulley kit from West Coast Fiero so these parts relate to this combination. I bought mine at advance auto parts. My 3800SC engine is from a 2000 GTP.
The assembly drive belt is shorter than stock with this alternator mount configuration and is Dayco number 5060870, 6PK2210. The supercharger belt is a stock replacement and is Dayco number 5060665, 6PK1690. I hope this helps someone else out when searching for parts as I have learned so much from many of Pennocks' members. Just wanted tp pass on some information .. Curtis

And for those that like Gates and Gatorback better... Those part numbers would be Gates k060870 / Gatorback 4060870 and Gates k060663 / Gatorback 4060663 (663 stock pulley, 660 3.5-3.6, 658 3.2-3.5)

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86 Fiero GT 4spd - L67 swap: VS cam, GenV Build Progress
98 GTP - Some mods