75% or more of the gains in a street head job (on a Honda) is from a good valve job and back cut on the valves. The actual PnP carries the remaining 25% but is the most labor intensive and takes up most of the cost of getting a head done.
If you've got the cash then go for the complete head job, if not then get a good 3 angle on a serdi machine and you'll be good to go.
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Don't bother giving me "rep", I won't return it and I think it is stupid.
Gracie Barra Clearwater
Gyms in Clearwater, St. Pete and Port Richey
pm me if you are interested in trying a free class at any of the gyms.