Why don't you go for B16A as there are a lot of modify equipment for it.If you totally want turbo, D15B might be good.In my country there is a D15B car with turbo runs 1/4 mile in 15.9 sec. (not so fast but alright, isn't it)The modifications areSet turbo, use the one from Toyota 1JZ GTENissan SR-20 SET intercoolerBlow-off Valve BLITZ model Supersound2JZ-GTE fuel pumpRB20DET injection system e-MANAGE ecu controlas you can see, many modifications are standard part from other engine.So the cost won't be too high.
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