I bought my rs turbo escort about 4yrs ago now and at the time it had a very good spec but im looking to get a little more power,nothing stupid maybe an extra 20bhp or something

heres the Spec

1600cvh
low compression mahle pistons
piper T2 cam
S1 ported inlet manifold
Lightend and balanced bottem end
pace intercooler (normal sized one)
EMC fuel-air mods
mongoose stainless exhaust
hybrid turbo boosting 23psi ( i think this is a stage 3)
-31 actuator
ahmed bajoo mapped engine managment
AP paddle clutch
baileys dump valve
Samco hoses
K+N panel filter
piper vernier pulleys

im not sure if the heads been polished and ported or weather it has steel conrods because this isnt mentioned on the spec sheet.

i was looking at the 5th injector route with mf2 driver (but i dont know much about theses)

and maybe a bigger intercooler like the £600 pace one with twin fans but im not sure if its worth the money

what do you guys think