I'd do the 99+. There is something else to consider, and that is that Foxes are just getting older and harder to keep up. The influx of Chinese parts has made it very hard, and good quality original stuff is hard to come by. A friend of mine recently did a full resto on his 93' GT. He spent thousands at LMRS on all new door seals, interior pieces, quarter glass, etc. Guess what, it was all made in China. All the door seals leak, the interior pieces faded to an off color, and the quarter glass got this foggy hew within 6 months.
Kurt
Kurt