Best hydraulic flat tappet lifter?

I posted about the flat spot on the lifter in another thread
it comes stock on the 80-90 Chevy v6 2.8 & 3.1 (not the cut down V8) maybe on some Buicks ( I forget)
lifter Johnson HT 2095 & Sealed Power (Eaton, TRW, McQuay VL 217) (Dana, PC, NAPA 213-1724)
buy one and copy on your mopar lifter it would help to have a used varnished up lifter so you can tell how much is sticking out the bottom of the lifter bore
you want the slot uncovered on the base circle then seals with some lift there is a picture in my Johnson catalog (1990 so it may have been used later)
just put a v block on a magnetic surface grinder and run the wheel across (you could do this with a sharp file)
There are very few camgrinders that go to the trouble to do this- Crower is one of them
in 1990 they made a 2011 and 2011-R for HP use
I've also sees 3 series an R and a High Torque Rhodes style)
Those with 67 and earlier Big Blocks I recommend using the 68 (HT 976 )and later and pushrods- the early one had a smaller cup and wore quicker
but actually recommend the Magnum lifter and oil through the pushrod pushrods
the early 318 non oil through the pushrod lifter was not being manufactured by Johnson/ Sealed Power even in 1990 and the HT 2011 specified