I’ve got a Subaru i was told by previous owner that it’s a ppp uk2000 i haven’t got a certificate to prove it I had phoned prodrive but they don’t keep any data anymore is there any where else I could phone to check if it is or isn’t

 

check the ECU under the passenger side footwell. should have a pink sti SP logo on the ecu casing. Which is the PPP ecu

also a blue silicone prodrive Y pipe running from turbo to intercooler

 

The ECU will be under a metal kick panel, as gambit says in the passenger footwell. Watch your fingers - the edges of the panel are sharp!

 

all the previous ppp parts were taken of by the old owner

 

In that case even if it was or wasn't, if it no longer has the ppp parts then its not a ppp.

its only parts & a cert

 

What's the OP's master plan exactly?