if theres anything ive learnt about GTR's, your better off spending a bit more when u buy the car instead of saving a couple of grand and gettin the cheaper one.
in the long run it will cost u a shit load more if u get the cheaper one
i know its your first one and you probably just wanna buy one so u can get in the cockpit and go, but take ur time and find one ur 100% sure u have one u wanna buy.
u can get a stock box redone for around 1300 bucks,.. thats new syncros bearings and labour
a reubuilt enigne.... you dont really wanna go there, especially if your on a budget