which to use
 

right i have a T25 off a Silvia... but i could probably get a T28 off one of the lads.. im planning on running about 12 to 14 psi on stock internals.. Which should i go for?? im assuming the t25 can do the 14psi with less lag than the t28?? but the t28 would be under less pressure to get to it??

That's a very general question to ask. Its your car, what type of character do you want it to have?

What ever you go with make sure you support it well.

well id rather it have less lag hence the recirc dump valve and smallish intercooler i got.. i want a fast spool up so i got a log manifold with a 3 inch system from abe.. its a 1.6 engine with stock internals.. im not overly worried about massive power at the moment maybe around 200 odd WHP