Later this year I'm planning on getting my valve seats cut and some new valves(I had a little incident with dirt a while back and I replaced the valves but never had the seats cut,They seat alright now but I would like to have it done for peace of mind) I'm wondering if I should get oversize valves to accompany my new race cams and I had some mild port and flow work done?? What do you guys think?? Will I notice an improvement in performance?? Thanks alot...

 

No need to replace the valves until/unless the flow bench tells you that it is needed.

 

I'd stick with the stock valve size and get a quality 3 or 5 angle valve job. You can also go with a 30 degree backcut on the intake valve(s).