ksh-88 on redhat 7.x

Could you please advise if there is any way to install ksh-88 on redhat 7.x ?
For redhat 5.x and 6.x we can use following solution
https://access.redhat.com/solutions/1323223

Could you please confirm if it is still possible to use original ksh-88 on redhat 7.x ?

Thanks
Andrew