Seeing as how you want a boosted single cam and don't already have a d motor and are budget oriented in achieving your goal; I would reccommend visiting ww.hmotorsonline.com. While your there, you'll notice that they offer a D15b complete longblock for $435. Add a tranny for $150. http://www.hmotorsonline.com/shop/sc...age&item=30019

That's about as good as it gets for power/performance per dollar. You could build a reliable 300whp motor with as little as pistons and rods internally and a good turbo kit/tuning. Not to mention if the $150 tranny price includes the JDM tranny, it will be LSD already. The USDM tranny has been my weak link many times.