Enginetech V1589 are good replacement valves and pretty inexpensive. As stated, you'd just need a set of 4 groove keepers to use with them. Sounds like you've already got retainers covered.
I can tell from thecwiggle test that the old exhaust valves have a little slop. Nothing horrible. But not great.
Our plan is to run these heads for a year or two and than get another set of heads, teach jason how to port heads, and get a valve job, and guides if needed.
But it looks like we will only have $50 into replacing the valves and locks
