What to look for when buying a 1st gen Dodge
 

I'm interested in buying a 1st gen Dodge 4x4 for a daily driver. I found an '89 w250 single cab long bed, 5.2l 318 with 88k with 3spd auto for $1,600 on craigslist. Seller says it was used as a plow truck for 5 years. It doesn't appear to have any rot other than some rust holes in one of the rear fenders (seller is including a patch plate). I'm not very familiar with the 3spd auto, but is there anything I should be aware of when looking at the vehicle? Any information would be helpful! Thanks in advance!