Here's my crawler. 1986 Land Rover 110 HCPU. After tearing her down and going through it started with 3 in lift spring and rte trailing arms and casted corrected radius arms . Replace the stock diffs with ARB air lockers and 4.11 gears with chromoly half shafts to help out with the 37's . Was lucky enough to find an Ashcroft underdrive to slap onto the transfer case to make her crawl.