If you plan on swapping and on a tight budget, I would
not recommend a custom turbo on your current stock. For one, it's not really that cheap to start a custom turbo project. It will still cost you around $1000 or more. At a minimum, these will be required:
-Custom exhaust manifold= $200-400
-Junkyard turbo (T3, TD04, TD05, T25, T28)= $50-60
-Downpipe and downpipe adapter= $80-100
-Intercooler (Starion, Conquest, Volvo, Saab)= $30-50 used
-All piping= $150
-Boost dependent FMU= $80-100 used
-Cone Air filter= $50-100
-Oil supply line= $30-50
-Oil drain line= $5
-Oil fittings= $20
-Piping connectors= $20
-Hose clamps= $15
-Various vacuum lines= $10
-Gauges= $120
There are still ways to cut these prices. For one, you can use a 88-91 CRX/standard Civic pre-cat headers that can be converted to act as your exhaust manifold. These header will fit all D-series engines. To get more info, visit
www.homemadeturbo.com
Hope that helps.......peace!