Gauge Swap

I'm getting ready to do the interior of my truck and trying to get everything lined up in order before buying the items. I've already found the fiberglass dash and now I'm wanting to go with a different set of gauge clusters for my truck. Would I have any problems with using the newer mustang lunar gauge cluster by auto meter in replacement of my factory 91' Ranger XLT (V6) gauges? How would I convert the mechaninal to digital on the odomator? And would I have to swap out the fuel pump/sender unit?

fuel pump sender should work but ull have to get a mustang sendin unit out of a tranny and put itin there to get it to work.