2007 Holiday Rambler Neptune XL 38PBT tag axle is approximately 39FT with 3 slides, 325hp ISL 5.9 liter Cummins diesel with the Alison 6speed Auto Trans. Tires New in at the end of March 2024.We completed an inspection on this RV, and the following shows the results of our findings:The engine runs well.The transmission shifts well.The engine or dash AC seems to work.2 rooftop AC units function.The water system works.