Push in shift handle to bolt in

Brewer's sells the piece you need to convert the shifter to a push in style. You have to tear it completely apart, but it's not a hard job, I did mine this afternoon, but went the other way, from a push in to a bolt in style.

Brewer's Performance - Mopar A833 4-Speed Transmission and Component Specialists

It's not a bad job, took me about an hour to R&R the entire thing.