Hurst Competition Plus any cheaper than $500

Jim you really don't need to spend that much on a Hurst.
The truck shifters are cheap and have the slip in handle
you are wanting. If it is wore you just take them apart and
clean all the old grease and sand out of them. The main
pivot pin can be flipped over for a whole new wear surface.
Same for the small carriage bolt turn it 90° from how it came out
and let it wear that side of the bolt for the next 100,000 miles.
Just add new grease and keep the levers and shims in order.
They may feel a little loose until you bolt it in. This is normal and
how they all are. I think of it more as broke in than wore out.
To tighten it up to your liking just tighten the main pivot bolt
till it binds the right amount for you. If it doesn't tighten
up enough for you a few thousands ground off the main pivot sleeve
will get you there. Be careful doing that. To much and it will get so tight
you won't be able to shift it.
I have rebuilt more shifters over the years than I can keep track of and never bought
anything but grease. I have never had one so wore I had to grind the sleeve. I have never
seen one wear thru a shim. The two places they wear is the carriage bolt and pivot sleeve.
Both of those parts can be flipped and be good to go till you wear your arms out grabbing
gears.
Now the slip in handle rubber isolator will wear out. Better off with a bolt on handle.
This has worked for me for 35 years. A hours labor can save you some doe. and
have a shifter that works smoother than a new one. Its already been lapped in like a valve on a seat. Better than new.