GM politics erased the Fiero after '88. They were on their way to dominate GTP and GTU when GM got pissed when their Vetts couldn't hang with them.
Here is a little info from Huffaker racings history:
By 1984 Pontiac had an interesting project assignment for us: The Pontiac Fiero for IMSA GTU competition. We developed the Super-Duty 4-cylinder engine which proved extremely potent in many forms of racing.
In 1985- 1986, Bob Earl and Terry Visger drove our Pontiac Fieroâ??s in the IMSA GTU events. In 27 races Bob earned 16 pole positions (nine records), scored ten victories ( led 23 races), and set ten fastest race laps, (6 records). Terry continued that trend.
All in all, 15 Huffaker Fiero racecars were produced. These racecars and engines are still winning championships in Puerto Rico. Please see:
www.jorgediaz.com In 1987 we added an IMSA GT-Lights car to our stable. We purchase a Spice chassis to utilize our Pontiac Super-Duty development program. More records and more wins culminating with combination GTU and GT-Lights entries at the 1989 Sebring 12 hr. endurance race where we won with both classes, a record for a single team that still stands. The Huffaker racing team won the pit-stop competition every year we entered, beating out all of the factory teams as well. Drivers: Dan Marvin & Terry Visger set the records. Others that shared driving chores from time to time were: Domimic Dobson, Bob Lesnett, Bruce Qvale, Dave Rocha, Parker Johnstone among others.
The Quad4 was one Bad-A$$ 4-banger in it's day!
Scott