I want to know what I need to take my N/A and turn in into a turbo

[Quint]

Thirded, bit of a pipe dream, sorry mate.

Best bet would be to buy a new car, that is turbo. Sell your NA car. The price differance would be far far smaller than the cost of a conversion.

Otherwise buy a 7MGTE drop it in, should take no more than half a day, so hire the crane to do it.

Not to sure on why you'd need a new Dshaft tho? Automatic and manuals have different lengths, But the 7mge and gte block would sit in the same position and have the same bell housing, so i don't see why that'd require a new dshaft, also doesn't the R154 have a differant spline count and aren't they a differant length to the W5* boxes? so even if the dshaft need replacing (which im pretty sure they don't) a R154 dshaft wouldn't help.

EDIT: I'm assuming the 87 has the W58, which i'm pretty sure they do, only differance between GTE and GE is the flywheel sizes, ones 9" the other is 9 1/2"