Need some advise on drive pressures and turbo? I have a 2005 Ford PS 4x4 CC it has 250cc injectors,Spearco,4.30 gears, ported heads, head studs, ITP fuel system. I am currently running a TN T-66 with a .68 exhaust housing, Drive pressure at WOT is 58psi and boost is 38psi this turbo doesn't light until about 2400 RPM it seem to be about a one to one drive pressure at light throttle. EGT's are high at Hwy speeds 950 to 1050 if you get into the pedal it's 1600 in an instant. If I use nitrous it run's really well. So any Idea's for a turbo should I go bigger in the compressor side or smaller in the exhaust side are will twins fix my problems? Looking to see if I can make it more streetable and be able to tow a 5000lbs boat?