so drove it to Moab from phoenix and its worked great.. about 900 miles round trip....engine runs great but no power! I have 5.29 gears with the 37" tires and it can not get up hill faster than a U-haul truck loaded down. Never used 5th gear! I am a bit fustrated as it ran great with the 33" tires but this is just too much for it! Who has the best engine swap out there? I would like to tow motorcycles with it in the mountains.... maybe a chevy 350? i put one in a 1976 land cruser and it rocked but I am not sure with this light dudy drive train on the highway how it will work...any ideas?