So after many hours of careful consideration and on the recommendation of my 240 builder, I settled on the Turbonetics GTK450 for my choice of turbo. Mostly because of my personal experience with them in past tuning sessions and seeing how well they last in real world and daily driving conditions. I am familiar with the way they flow and perform and it is ideal for my application. Very quick spool, tremendous mid and lower top end and very good upper top end. Coupled with the right cams and head work and the turbo is capable of flow right to 8500 rpm and can produce as much as 500 hp. In a typical application they are easily capable of between 400 to 450 hp. My aspirations are not quit that ambitious though, but it gives me what I need now with good results and then room to grow. The other nice thing about the GTK series turbo is they are fully ball bearing and balanced units with coated hot and cold sides and are fully ported and have a nice finish to them. all for under $1250.
But alas and as my luck would have it, They just stopped making them. This is where Jeremy from Street Masters stepped in and conveyed my concerns to Turbonetics. He was able to broker a deal with them to construct me a custom turbo that would flow the same as the GTK only the new design would have quicker spool with the addition of a billet wheel. I looked at similar turbos and the prices range from $1800 to $2500
Turbonetics did all that for me and at no extra charge. Plus I still get their amazing warranty. 1 year - no holds barred - unlimited warranty including parts and labor and two years limited.