Considering a build on my 98 uk turbo as mileage is around 135k and suffers piston slap badly when cold, currently have a 3" full system decat exhaust other than that standard. Ideally looking for 350/400bhp that is reliable but will have second car as a runabout.
Looking for advice as to best build that will get this result, was looking at replacing pistons,rods,bearings, uprated oil pump, injectors, walbro, bigger injectors initially but recently have been considering sti heads but unsure if these would be of much benefit?
Cheers in advance
Gaz