If anyone here is familiar with my area at all.... There's a big hill near where I live (Crystal Valley, Oceana County) called Firetower Hill (can you guess why?) Anyway, most slightly modded trucks have difficulty making it up there. This weekend, I crawled right up it in 3rd, 4lo. I don't know what happened. I've seen guys with 33's not make it. I was glad there was only one person there to see it but oh well, I know what I did and that's what counts.
Its all state land. They're actually (for the most part) mapped roads. I don't know if it's be worth the trip for your truck, she looks pretty mean, but if your ever at Silver Lake, lemme know and I'll show you the area a little.