Let's look at some of the 4th gen GT Birds. This 1st one was raced by Leo Glasbrenner. Leo has a trans shop in CA, called Remac. As many here know, he also ran a quick '68 Bird Stocker, for many years.
Just looked back at some DRC files. At the 2012 Pomona Finals race, he was running it in SS/JA. That means it had Chevy power. But, I assume he swapped out the Chevy engine for a Pontiac engine, during the off-season. By the 2013 Winter Nats, he was running in GT/DA. I think he was running a 455 Pontiac, at that time. Not positive. Later on, I think he switched over to the alum head 428 engine. I've seen the car listed as a '96, '97, & 2000 model. Don't have a clue what it was, from the factory.
Here's that '13 Winter Nats Q-list. After this one, I'll try to only list some of the car's best races, to reduce the number of entries.
2/15/13 - Winter Nats - #28 - .631 under.
https://www.dragracecentral.com/DRCS...r2013#indextop
10/13/13 - Vegas SN - #17 - .840 under - GT/DA Class Winner.
https://www.dragracecentral.com/DRCS...r2013#indextop
https://www.dragracecentral.com/DRCS...r2013#indextop
2/8/18- Winter Nats - #8 - 9.562 - .938 under - Qualifies at most races somewhere near .800 under, a little more or a little less.
https://www.dragracecentral.com/DRCS...r2018#indextop
4/7/18 - Vegas DENSO Nats - #23 - .780 under - GT/HA Class Winner.
https://www.dragracecentral.com/DRCS...r2018#indextop
The Class Finals list shows the car to have a 428 engine.
https://www.dragracecentral.com/DRCS...r2018#indextop
8/25/18 - div 7-5 - .001 final round light- Race Winner !
https://www.dragracecentral.com/DRCS...r2018#indextop
11/14/19 - Pomona Finals - #18 - 9.66 - .840 under.
https://www.dragracecentral.com/DRCS...r2019#indextop
At the early 2020 races, Leo was driving a '15 Camaro in SS, & a '14 Camaro in Stock. So, I suppose he is another guy who has jumped ship.
At one time, he had put both Pontiacs up for sale & said that whichever one sold 1st, he'd keep & race the other one. Don't know if both cars sold or not.
LOTS of guys have switched to the fast FS cars, in both Stock & SS. I suppose the main reason is because in breakout style racing, the fast car has 2 major advantages. (1) The slow car has the 1st chance to red-light. When they trip the red-light, the quicker car gets an automatic win & a free time trial, during elims. Quicker cars win lots of rounds this way, during a full season of racing. (2) The quicker car also has the advantage of being able to easily see exactly where the other car is, all the way down the track. This gives them the advantage, for finish line strategy.
It was yellow & white for years. I think it was in 2018 when it was changed to blue & white.