From a quick Google search, looks like it's shorter than the earlier GTO's, but longer than Birds.
So, is that a bad thing ?
I mean, is it a "shorter is better" deal ?
Took a look at the GM GT cars on the Indy Q-list. Looks like most are Cobalts, Cavaliers, & 3rd gen F-bodies.
There were a couple of late GTO Stockers there. They were both running in the 10's, with 9" slicks. So, with a '77 Pontiac 350 engine, there shouldn't be any problem running in GT, with a Stocker suspension set-up .
Looked up some prices. There are some higher mileage cars for around $10k. This 1st one is the cleanest lookin one I've found that is well under $10k. It's $8,599 (OBO). So, there should be some decent race car candidates out there for $5k or less.
https://classiccars.com/listings/vie...-florida-33317
$7k
https://www.carsforsale.com/vehicle/details/77303073
This one is $6490, with a bad auto trans.
https://www.ebay.com/itm/20359441260...=&toolid=10050
How 'bout a '74 ? If you have to start from scratch, starting with one of these or a 2nd gen that came with a Pontiac engine might save a little work & money.
https://cars.trovit.com/listing/1974...ck.J1ZZ1O14h0Q
https://cars.trovit.com/listing/1974...r.1is1oEh18i1i
https://cars.trovit.com/listing/1974...iles.0185HXyNU
https://automotive-classifieds.com/d...premium-trovit