How do you Build for Torque 3.2 Ltr

[flmont]

Hey Guy's,..I will be rebuilding a 2000 3.2 ltr engine, And Iam curious on how can you build for more Torque and HP,..Iam interested in more Torque first,with more HP as a bonus if thats possible,I already have the 987 airbox,74 mm TB,and plenum..I will be running headers also,..but I also want hi-way speeds aswell,..say a crusing speed of 80-90 MPH,..can you get the best of both world's ??
Thank's for the help.! Frank