Are 19lb injectors enough?

Hi,

I removed my engine out of my 89 mustang gt and to my suprise I was about 3 months out before spinning a bearing. I havn't had the car long less than a year.

So I stripped it to bare block and sent it out to the machine shop to have the following done and mods
done by myself:

Bored .30 over
Flat top pistons supposed to increase compression ratio
b303 cam
gt-40 heads off explorer
explorer upper and lower intake
1 5/8 unequal length shorties
2 1/2 inch off road h-pipe
2 1/2 pypes mufflers and tailpipes
65 mm throttle body
70 mm mass air
electric fan
smog pump removed

I have 19lb injectors out of a explorer that I want to use but I don't know if there up to par with the horsepower increase.

Also if someone could guess what the horsepower is too.

Thanks for your help

Justin