hey guys heres the finishing post and awnser to the problem, i figure its only fair to post up a solution to this problem for those who are experiencing the same symptoms and searching the net for answers but also to concur with what these guys have been saying all along..
the problem is a cracked coil on plug which is found on the v2 wrx but to my amazement it wasnt just one or two but all 4 coil plugs were hair line cracked.
when i was told to check the rubber tip insulation for cracks i didnt find anything (to be honest the rubber sleeve tips seem in really good condition, like new infact) but when i cleaned up all the coil plugs i noticed what seemed to be a hair line crack on the actual plastic thats on the plug just above the rubber insulation (now i know what slystiguy meant ) so i wriggled the sleeve off but as soon as i did the end of the coil plug disintegrated so i thought i would check another and yet again i noticed a crack just above the rubber insulation sleeve and when i attempted to remove the sleeve exactly the same happened again so i checked #3 plug but yet again i noticed a hair line crack and when i attempted to remove the sleeve... yep you guessed it, it fell apart so by the time i reached #4 coil plug i figured 'whats to loose' and sure enough it fell apart.
whats interesting is that all 4 coil plugs have fell apart in the same place on the under side of where it slots into the engine which is interesting i thought that they all give out at the same point.
my theory is that i only got away with running full throttle and boost for so long is because the coil plugs were undisturbed for so long and that as soon as i unsettled them by removing/reinstalling them it caused them to weaken and maybe the damage was done the 1st time i put my foot flat to the floor on test for the new spark plugs that caused them all to hair line fracture? just a thought.
the picture i am posting is how all 4 look, exactly in the same place and even taper-in the same.
cheers for reading and i hope this has been a help to someone with a classic WRX having the same problem and thanks to you guys on here for helping me out