also add more, it all depends on your horse power goals and how you want to achieve it, other wise for bolt ons (57 or 60 trim ct26's) (jt turbo @ mdc/notrice.com) and (boss and sp) however ive heard many problems with both of these companys, you can also go to (935motorsports) and they make their own version of the ebay turbo with a warenty and the turbo is like 500 bucks i dno anything about it but it looks like a deal to me. . . . but as far a long tube monifold goes the skys the limit with t3's t4's and even t6's if you wanna get that crazy.....(garret, holset, obx, turbonetics, inovative, precision, borg warner) there are so many out there.......
thanks
-sean
ps.
dont be afraid of nitrous as many people are it is a great friend to have to make horse power also.