Am7088

I have a 79 RX7 w/86 13bmotor it has a full racing beat exhaust, a full racing beat intake w/ dellorto carb. w/ k&n filter. A rebuilt trans w/ aluminum flywheel 12 lbs. Competition clutch. Electronic dist, braided ss oil lines. Was told by original owner that engine had apx 200-225 hp. I don't know how close these numbers are on a non ported motor w/ these mods. I know it pulls very strong. It has new koni shocks on rear also. I want to go time attack with this car.
I have and plan to install a foam filled fuel cell w/ Mallory 140 gph pump and canister filter, 1/2" aluminum line w/ AN fittings to Mallory reg under hood dropping to #8 ss braided line w/ AN fittings to carb. Have a msd 6al box also to install also.
Any guess what kind of hp/ torque numbers it would make after these mods are done would be helpful. I don't know enough about these cars to guess myself. I would like to get it into the 300 hp range in order to be competitive. I can shave weight to around 2100-2000 lbs for a 7 to 1 power to weight ratio.
Any tips on other minor mods I can do to gain hp and torque? Suspension upgrades and break upgrades are next on list. How about aerodynamics ideas. Not much available for first gen bodys I've seen.