I got this '69 for free, the guy was losing his storage and just wanted the 14X7 Rally IIs off of it for one of his many '69 Firebirds. Spent a couple of grand fixing it up and drove it to work for about a year before selling it. These cars are bitchin', I miss it.
I rebuilt the engine (re-ring and new bearings mostly) and put 6X-4 heads on it and an Edelbrock Peformer cam, it had most of the pushrods bent from the nylon cam sprocket that failed after around 97K miles. Put in a good used TH400 trans with a shift kit and a 2-1/2" dual exhaust.
Used to run it at the track, it did low-15s at 95 MPH. Won a Friday night Street Tire Trophy bracket race with it once, had to launch it easy to keep the 235/75-15s from going up in smoke with the 3.23 open rear (205/75s all around in these pics).
This big car impressed quite a few onlookers at the track, it held its head up high and ran good for a 4100# car with a low-compression 400 (87 octane) and no headers. Always got nice 2nd-gear rubber because of the very harsh Turbo Action shift kit.