Best way to spend £800 on a ST205 Options

[donna]

Hi people
my gt4 is lightly moded and running 333bhp at thd fly. I would like to know the best way forward spending 800 - 1000 pounds.
Current mods are as follows
blitz electronic boost controller 1.1 bar
pigy back unichip ( made no dam differance)
high flow panel filter and resinator box removed
vsv disabled
bailey dump valve
light weight alloy rad only because the standard one split
organic clutch
blitz nur spec r exhaust
aussie down pipe.

I have been thinking about a hybrid turbo. I know very little what is best, im open to opinion. Would I also need to upgrade the fuel pump if I went down this route?

im not looking for huge power. something with a fair amount of power but reliable

any ideas

[donna]

Yes im still running stock intercooler, i have been led to belive its good for 400bhp
The brake lines and calipers are standard but im running fast road / race pads. They are doing a good job at the minute.
tyres are bridgestones, these seem ok but im sure I need to go wider. The car has a tendancey to step out and it can be very hard to get it back. Im thinking of trying 225 50 R 16 instead of the current 215 50 16 this will be on a seperate budget if i do.

Im looking for engine mods really. Forged is a good idea but i just dont have the budget.

Am i likely too see much hadling improvement with coilovers? sorry if this is a dumb question