Well, I'd buy an adjustable boost valve, crank it to 20psi and run low 14's....that's a whole 45 bux right there
Then I'd spend the other 55 bux to build a 3" downpipe...can you say "walk all over your 14.3 second 5.0"?
I've got ~1600 bux total in my SVO (including purchase price, a set of 17x8" wheels and tires, a pair of slicks and 15x8" wheels, upgraded turbo, killer header, huge intercooler, 46lb injectors, hipo clutch, and a nitrous kit). and it would walk all over your 5.0 as it sits...and I haven't even filled the nitrous bottle or turned up the boost yet. I'm leaving AT LEAST 100rwhp on the table untapped at this point. What do you think another 100rwhp will do to something that already has a 103.8mph trap speed?