All F-body serpentine systems are the same, but the TBI and TPI use one bracket that's different. It's the one from the A/C compressor area to the intake manifold. The TPI bracket is still available through GM for less than $10.
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Willie
Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
12.57 @ 111 mph.
12.04 @ 114 mph (50-hp nitrous).
http://members.optushome.com/au/downunder1/rides/willie/willie.html
1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.