-73 Duster and a Swedish owner

Hello everyone!
This is Henrik from Sweden´s first post on this forum.
I recently bought a -73 Duster, with a 318.
This is my first classic v8 car, so i am sure this is going to be an adventure.
This is going to be a long term project, but she's running and the engine is supposed to rebuild a couple of years ago.
my final goal is to have a nice streetcar, with a mild race look to it, and a little streetable power underneath the bonnet.
The engine specs: J-heads,
Holly 600,
Edelbrock performer intake
Accel coil and cables
Bad headers (severe road rash)
727 Torqe Flight
8 1/4 rear end

Anyone could take a guess on my HP output, because i certainly can not.
I hope and believe to hang around on this nice forum quite a lot.

.H