I have several different valve for my 8V some stock size other are +1mm.
My thought is the intake stock are more nailhead design on the intake vs the SI +1 and the new vendor +1 as shown below
https://drive.google.com/file/d/196W...ew?usp=sharing

The exhaust valves are also quite different
https://drive.google.com/file/d/1lEN...ew?usp=sharing

So my question is which valves should I use?