I would consider going with newer cab lights. The old ones look like crap IMO. Look at the ones off a 99+ or some of the aftermarket ones. But the hole spacing may be somewhat different.

 

well on my 98 i used the 3rd gen cab lights like the ones on my dads 05 common rail and they look so sick

 

With no pre drilled holes your free to use pretty much whatever style you wish. I installed mine using the Recon set for my year of truck, But I installed my center light about 2 in forward of the others. I thought it looked better.

 

anyone got a template maybe?