Start with the basic tuning with what you have. Establish a goal and buy only what is needed. A TE-63 is way too big for a stock motor,you will need a 3500 stall to spool it. A TA-49 or a TE-44 and 42# inj will get in the 11sec range. What fuel pump is in it?
Go to gnttype.org and look at the recipies there....
Most bigger turbos need more stall,bigger inj,better IC,down pipe,ex dump and good cat back,good fuel pump,chips. Just throwing a big turbo and inj won;t make it quicker.