james,
lol regarding yr wife (wish mine thinks like that
..... I would buy the Gt3 tommorrow ) , yes I bought the P1 in 02 , previouse owner had done some mods on it to get the bhp to 310(280 standard), drove it for a few months....then started with a VF34 turbo,550injectors, Gruppe S headers and up pipe and Motec m800 motorsport ecu , Aps fr mount intercooler to bring the power up to 360bhp at the fly, kept this setup for a year (great everyday car ), then add a Aps Sr 40 turbo to up the power to 390-400bhp....got bored of this setup.
Drove a P1 with the (then not available in UK) US EJ257 2.5 block, six speed gearbox conversion (was awesome road car with 500lbs torque @ 5000 rev.....0-60 mph around 3.6sec),noted to one self need to have this setup.
So I Converted my P1 with a bottom 2.5 block, with forged omega piston, Forged Crower conrods, multi-layer Sti metal head gasket, Arp headstuds, new ported cylinder heads with supertech inlet/exhaust valves and springs for a reliable 500bhp+ engine ,
a bigger turbo was fitted (Lateral performance MD321T )bringing to power to 460-480 fly,
after run-in period and full remap of the mods/engine, car was awesome to drive .
my tuner reccommend to have the car running a "closed loop fuelling " option on the Motec(his words were icing on the cake lol )
as I use BR Developments in swindon for all my mapping ......As I drove down for the mapping my car develop a coolant temp problem, long story short , turns out the heads were "lifting " under high boost so if you drive it daily you will not notice it , only manifest it self over boost of 1.2 bar .
I though as the engine need to be out , might as well make it bullit proof...decide on a Ej22 block (as fitted to the legendary subaru Sti 22b)as this is the strongest engine to start with.
so as with any modiflied car you will run into problem ....this is my case , as I request to have the heads and block modifly for bigger 14mm Arp headstuds...i can go on and on with the probs that I had encounter !!
anyway the final spec "WHEN" complete :
Subaru P1
EJ22 2.35 forged engine with uprated /gas flow P1 heads
850 injectors
Aps fr mount intercooler
Graham goode racing alloy radiator
Sti 6 speed gearbox with Rcm carbon fibre propshaft
uprated billet engine and gearbox mounts
walbro fuel pump/ fse fuel regulator
all hose and fitting uprated with samco/alloy fittings
motec m800 ecu with close loop fuelling option
Apexi-Avcr boost controller
AP racing 6 pot BBK
Brembo sti rear brake kits
Whiteline uprated fr and rear anti-roll bars
and all accompanying mods .
capable of 500+bhp with similar torques
this setup will defo be a handful on the road
...as the P1 is very light compare to the M5
to be honest although the m5 is a great car no doubt...i really missed driving the P1 as its a different (more raw) feel to the M5.
will keep you post on the exhaust if i decide to sell/change .
Mike
, If i do change will pm you regarding rpi exhaust (thats if you still not source one) 
)
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