RB26's don't have VCT.
If you decide to do a rebuilt of an RB26 you should be looking at a minimum of $6k including R+R engine . I don't like your chances of a $6k built though, I'm sure it will cost you more unless you do some work yourself.
This is for a basic rebuild not including head work ( but including basic reco), cams, cranc, etc...
On the top of this you have to allow for turbos, computer, injectors, AFM's, EBC, I/C pipping kit, maybe dump pipes, front pipes , cat, catback exhaust , cams , cam gears, tune and list goes on and on, clutch and depending on what you want to use the car for, upgrade cooling system and brakes.
You dont have to do much to a healthy GTR engine to run 11 second 1/4 mile so if you bought one with a good donk just leave it in there . Get a set of GTSS turbos ,injectors, maybe AFMs, power f/c, ebc, full exhaust, maybe a clutch and your goals are met very easy, don't worry about power numbers. Enjoy it like that and when you blow it up do a rebuild and by then you will want more power.
If you are worried about spending money on the car DONT modify it at all and even then you are at risk buying an old car .
I have run 11.8 @ 118 mph in my car with just GTSS turbos, ebc(1.1 bar), power f/c, 550 injectors, front pipes and a catback in a car that weighs 1580kg with the aid of a 6 speed box and a NIsmo twin plate , the weight advantage of a 32 or even 33 makes up for that.