Site has a great set up, you hit all the general areas, however once traffic pics up, I have some great ideas that you can impliment, but we'll have to wait, it's useless to put through right now, here's my list just incase you're currious:
Ride of the Month section- in this section sit members will nominate people on the site, that person then has to accept, and he/she has to be seconded by another member to be in, first 5 that meet these qualifications are in, then the voting starts. For 10 months we do this, last two months all the winners go head to head for ride of the year. First month all 10 go up against each other, last month the top 5 go on, and a new pole is started for ride of the year. Then we start again next year. No member can win twice a year, and if you won the year before it would be nice if you sit out next year. Ride of the year winner can not enter any contest the next year. At first we may be able to only do 3 or 4 rotm contest a year, but as traffic pics up we can increase till we can do a true ride of the year.
Parts for sale could be broken down in to 5.0l, 4.6L, and 3.8L engine part sections, that way it will eliminate any confussion between the two. Also, a general 94-98 section should be made for the handful of parts that will work across all models.
If you really want to expand your fan base, then getting up a 99-04 4.6L edge section up would be a good idea as well. Remember the 99-04 model number is still refferenced as Sn-95 Edge (back then it was Sn-95 New Edge, hardly "new" by any means now). The 3.8L section will be fine for 94-04, but you could go 94-98 and 99-04 specific, however all sites I've been on have them merged and it works just fine. Oh, for the edge section you could also make that 96-04 as well. 5.0 section must remain alone.
Starting up an audio specific section could be helpful as well for people that strictly have audio questions.