hi sages- have never painted a major part of a car other than touch up. have a 92 245 in good condition. parked in my driveway and in the fla sun which eats paint. almost as destructive as salt in nj. the body paint is in good condition and original. used the top rated nu finish car polish/wax a few years ago. color is a dark navy blue. the roof paint is a different story. it is very dull and the clear coat which i surmise it used, appears to be turning white and flaking off as white powder. reminds me of cody jarret in white heat. want to rehabilitate it without being soaked by a car painter for $1000 or more. here is what i propose which i would like you to critique if you have actual exprience with this. 1st wash car then use rubbing compound to remove remainder of white deterioration(paint under seems in good but dull condition). when roof is clean, wax it with the nu finish to restore the shine and barrier coating. as alternative plan b, skip the waxing and paint the roof with that durable flat black(somewhat grainy ) paint which i have seen used on pickup beds and car roofs and hoods. if this is a good idea i will have to research the name of this paint . word is that it is extremely durable and resists sunburning. the different color will hardly be noticeable since the blue is so dark. since i plan to keep the car until it becomes unrepairable and dont care what mrs. jones or the ultra fastidious think. your kind and respected advice i seek. thanks tons oldduke