ef question

[HondaBooster716]

wasnt sure where to ask this but i have a dx ef and i bought an si cluster
is it just plug and play like i just switch it or do i need something else

[WestoN]

88-89 si clusters fit 88-89 dx and base models.
90-91 si clusters fit 90-91 dx and base models.
You can use the opposite one but you'll have to swap pins around and the cluster hoods are different. As long as the years match its all plug and play