I put a 1HD-T into my 1999 HZJ75 and I love it.
Use the larger 1HDT flywheel with the Isuzu 300mm fine-spline clutch, for a bolt-in setup. You will also need to source the 1HD-T air filter housing lid.
A leaf spring can be designed to flex well but they need to be specific. A spring for a soft top 40 without any accessories will need
a different rate than a 40 with a hardtop, roof rack, bumpers, winch, aux gas tank and a tire carrier. There's...