GT-40 heads would love a
Vortech super charger. After you strip your engine down again to put $1400 TF heads on, $600 intake, $275 accufab TB with egr spacer, $100 ARP bolts, $100 gaskets, $400 for new cam, lifters, locks, springs etc....$300 for new stud mount roller rockers, $80 for new GSS340 fuel pump, $200 for new 30lb injectors (your 24's would be fine though), $300 for new PromM MAF to match your 30# injectors, and other misc stuff will be about $3,700. You will gain probably 70-85 HP with this to net you maybe 300 rwhp which is typical for this combo. You'd benefit from getting a tune to maximize driveability and HP potential
$3k buys you a Vortech tuner kit, you'll need a bigger fuel pump, MAF, 42# injectors, and a tune as well. This should net you about 350 rwhp easily.