Power gains

Hi I have a 2003 Mustang GT trying to get a guesstimation on my horsepower I've added a couple of bolt ons BBK cold air intake BBK Power Plus performance throttle body pypes long tube headers deleted cats pypes H pipe underdrive pulleys 373 gears tires and front 245 - 45 - 17 tires in rear 315 - 35 - 17. Trying to see what I'm around saving up now to get a Dyno tune.
 
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