the search function works fine if you know how to use it properly. you must enter terms longer than 3 characters. this means you cannot use such things as F+T, 90+, m46, or even (which i'm sure you tried) 300 bhp. it is an invalid string that the search engine cannot recognize. to get around this, try using the biggest common terms you can think of, for instance, 300bhp, 250bhp, 300hp club, b230ft 300hp, etc. give it a shot and report back with what you find.
protip: it's not that hard to make 300hp with one of these, you just have to be choosy about the details. the stock turbo, stock camshaft, stock exhaust, and for the most part, the stock intercooler will not make it there. neither will the stock injectors with the stock pressure regulator. however, it is possible to get damn near 200whp (230-240bhp) out of the stock stuff if you think about the system as a whole and choose mods that make the system as a whole work better. 200whp in a 740 or 940 is pretty fun.
as with any turbo car, start with a good tuneup (stage 0 on that mcbrooms pdf above), and then open up the exhaust and raise the boost to about 12-14psi. that should get you hooked.