Outer Limits 4x4 Board

hey guys ive been looking at the chrome grills for sale on ebay for gq's, they list 2 different types. 1 is for 88-93 gq1 and the other is for gq2 94-97 models, my question is can you fit a series 2 grille on a 89 model cause they look better as their all chrome where as the series one grill has some black on it as well

They fit but you need to change to the later indicator/parker unit.

is it just a matter of fitting the new series 2 grille buying the series 2 parker indicator and plugging it all in or is it more complicated. IE: do you have to change wiring or anything else