I had a 70's K5 with a 400 and a 4" lift back in the early 80's and that thing went everywhere without a problem . That thing had a trans cooler and an oil cooler on , it never over heated . The 30 gallon tank gave it some range too. Thanks for posting that picture it reminded me of the old days . Boy it looks like you guys had a great day of muddy trail running , being from SoCal we don't see much mud here .