Ok i know this sounds dumb and i know im a newb but please help me out first off i just want to know if the dash in the 90 and the 88 na's are the same or does the style change at all also with the speedomiter and gauges and such are the 90 and 88 the same or do they change at all like the rpm's and such if so just tell me what year the changes were made thanks for your help.

 

86-88 are series 4
89-91 are series 5

hope it helps

 

Yes thanks answered all my questions in one phrase thanks