Congratulations! 199 wHP is pretty darn good for a non-loaded 3L conversion. Blow on the filter and you'd be over the 200wHP mark. lol Headers will definitely help, along with a filter with a very large filter-area to reduce restriction.
Former owner of '99 CSVT - Silver #222/2760
356/334 wHP/TQ at 10psi on pump gas!
See My Mods
'05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red
'06 Mazda5 Touring, 5spd,MTX, Black