in a bit of a pickle,currently having a new sti bottom end built including forged pistons steel rods etc by dave at api,when he asked what version mine was i was unsure so i just said it was a 1996 wrx on a P plate,he then told me it was it a v4 so i left it at that,only today i have found out its a v3 as it has a V3 interior it just confuses me a little coz it actually looks like a v5 on the outside....anyhooo i was just wondering if i have a problem on my hands if he has built it for a v4 instead of v3?
arghhhh all these different versions

 

If its on a P plate then it will be a V3. Has it got the facelift interior with the momo steering wheel

 

Shouldnt have any problems with Dave's work, he knows his stuff.

 

its definately v3 because it has the v3 interior,dave isnt actually fitting the new engine hes just building it then sending it to the garage where my car is (re motorsport,subaru specialist)for him to put the head back on and put it into the car,i just hope it all works out correct,are there any difference between 3 & 4 other then cosmetics?