Horsepower rating

I have a 1987 350 block with older 84 heads with a torker 2 intake, roller cam with .550 lift, roller rockers 1.5 ratio with L82 flat top pistons 9:1 comp. std. Bore, MSD 6T ignition, and a holley to tbi plate so I can use my tbi set up but I was wondering if anyone could give me a general horsepower rating additional Info added if needed

Headers?, cam duration at .050 lift? You want to switch back to tbi? You are using the tbi intake with what size Holley?

Hooker long tube headers switching back to tbi it's a edelbrock intake for a holley but I have a holley to tbi plate so I can use my tbi

Without the cam specs, the carburetor size and the exact type of intake, still cannot estimate hp. A carb will always make power than any 2bbl TBI.

It's the torker 2 for a 4 bbl holley and it's just a mild roller cam

Best guestimate here is about 325-350 hp, still you did not provide the carb size and what is a "mild cam".