Valve Clearance:
Piston to valve clearance must be checked before assembly. AFR 185cc aluminum cylinder heads with 2.020 valves usually will not fit a piston without valve notches having proper reliefs. Also AFR 205cc heads with 2.080 valves might experience the same issues. hope this helps James
Like stated above...it really depends on a lot of factors. This is one of those issues where you can't get a definitive answer without checking piston to valve clearance. I have a set of AFR185's and a F303 cam without problems, but someone else could run into problems with a similar setup do to differences in pistons, deck height, etc.
Thats why they made the 165 street head it has valve sizes that are compatible with stock 302 pistons. And I gather from your post yours are still stock?