does this seem like a good setup with someone on a budget? would it be streetable?

New! Garrett T4 series turbos built by Precison Turbo & Engine with their Mitsu style turbine housing bolt up to your stock DSM exhaust manifold and O2 housing. Comes complete with internal wastegate and high boost actuator (17psi & up). Compressor inlet diameter is 3 1/8". will fit 3" or 3 1/2" intake pipes. Requires oil kit which fits all years and NT water pipe for 89-94 cars - see below Price includes extra shipping cost (you pay only $7at checkout) Models in stock do not fit O2 "dump tube exhausts because web section is removed.
"dump tube" models are available special order. 12 month or 12,000mi warranty by Mfg.

450hp Garrett T4-DSM Turbo $870 "50trim" with internal wastegate Now In stock
Compressor TURBO SPECS Turbine

450 Max Rated HP
54mm Wheel Dia
2.123 Wheel Inducer
50 Wheel Trim
3.12"/2 Inlet/Outlet
360 Race Bearing System
T31 Wheel
2800 Full Boost RPM

The Garrett oil outlet flange is different - we solve this problem by tig welding a new flange on a stock 2g DSM oil drain tube. For oil supply we include steel jacketed teflon hose with fittings for the turbo and your oil pump housing. Bolts, 2g water line plug, and gasket too! For 1g & 2g Cars Available with turbo purchase only -
Turbo Oiler Kit $75
The Garrett center section is oil (not water) cooled and the 1g water pipe's boss for the turbo water line interferes with the T04B compressor housing - So 89-94's need the following (no picture)
1g NT Water Pipe & O'ring $40

didn't know if link was going to work so i copied, pasted