starting at the inlet
Bigger air scoop (search Vec C/dbilas)
Derestriced airbox
larger pipe from airbox to throttle body
ported/polished throttle body
stage 1 cams (piper or comp)
ported/polsihed head
Piper/dbilas exhasut manifold
2.5" down pipe
200 cell 2.5" sports cat
2.5" cat back system
remap
lightened crank pulley (less mass, so engine revs quicker)
" flywheel "
remove balance shafts "
'Sg' gearbox (lower final drive ratio for faster acceleration)