can any one give me advice on installing turbo on my truck that has done this install ...such as....> how does it perform ?do you recemond doing install ??do i need to change injectors?can i use same manifolds?>should i vent cranckcase throught valve covers ?what about injector pump?>do i need to use intercooler?what t-stat should i use 160.180.190.?does anyone have a down pipe for cheap money ?thanks in advance...deisel379