Yes, it’s likely that Cruz will pick Kasich for VP
Just read this article advising Cruz to select Kasich for VP. Yes, it makes a lot of sense for Cruz to do that. Cruz, like Trump, needs to assuage the establishment, and then you add in the fact that Kasich has hand-picked the 66 delegates from Ohio which gives him a pretty decent-sized powerbase at the convention. Assuming Kasich wants the job.
Also, it’s a smart pick for the general election. Grumpy old men make great vice presidential candidates, plus by now he has been thoroughly vetted. Cruz is definitely smart, he knows what he’s doing. Cruz is not going to pick a Dan Quayle or a Sarah Palin.