to be honest, I recommend NOT turboing it. if it's an automatic the 4l60e probably won't hold boost very well. I'd replace the harmonic balancer and crank pulley as they are known failure points, and maybe oil cooler lines if they are leaking.Ok, I offered him 1500, what type of mods besides adding a turbo and a tuner should I do right away? And estimated cost?
There is a little performance to be had with the n/a engines, what surprisingly made a huge difference on mine was removing the intake "snorkel" from within the fender and hollowing out the intake silencer, the factory intake was very restricted. the 95 intake silencer looks a little more convoluted than my 93's, so it may be easier to find an intake tube from a TBI 4.3 truck with no silencer. If it has a ton of miles and there's slop in the timing chain, you can sometimes gain some power by advancing the timing a bit (will require a special scan tool/software to do on a 95) but if you get too greedy with timing you can end up melting glow plugs and blowing headgaskets.