I ended up going with this: https://smile.amazon.com/gp/product/B001FEOPTC/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1
plus: https://smile.amazon.com/gp/product/B00017YYI6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
in my 2005 excursion. Absolutely LOVE it. Not the only thing I have added, but the airbags were needed - one of the first things I did.
I have one. I love it. It's expensive.
List of upgrades: - head gaskets - ARP studs - EGR delete - radiator - other smaller stuff cost: ~$5200 (parts and labor)
Air bags suspension: (left my leafsprings, added these bags) cost: ~$500 (parts) (amazon link)[https://www.amazon.com/gp/product/B001FEOPTC/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1]
Air compressor (on board): cost: ~$200 (parts) (amazon link)[https://smile.amazon.com/gp/product/B00017YYI6/ref=pe_2557400_229219060_em_1p_5_ti]
It's honestly the best tow vehicle for the money. Fits everyone and everything.