yes, you can, prices will vary depending on what model and whether the turbos are new or s/h. then you got manifolds which can be bought or custom fabbed up, piping, fuel system upgrade, exhaust, ecu....yada yada yada
yeh theres a fair bit to installing a turbo, its not as simple as getting a little turbo bit n sticking it on, theres much more to it, unfortunately...if u get prices, etc please let me know, ive thought about it myself
fitting a turbo can be done....( ya just cant bolt it on and off ya go)you will need to stengthan up your v6 1st or i dont think it will long that long ( i may be wrong ask around the forum and see?)i would say its almost the same ass adding the gmh supercharger after market....the standerd v6 aint made for it? if thats what you want i hope i can be done cheap for you.....( i made a few calls about adding a sup cherger to my standerd vt and the cost out did the extra power)i hope ya find what ya looking for...........take it easy and have a good week end............................cheeers