i recently looked at fj20det powrered gazelle on the weekend to see how it would fit my ke70. they are a chunky motor compared to most 2ltr 4cyl motors. I think the inlet manifold would have to be shortened, it was a front sump so that wouldnt be an issue and so other than that it would be a conversion just like any other one. Mounts, wiring, cooler + pipework, etc etc. I took the car for a drive it had a high flow turbo running 10psi microtech, intercooler and exhaust for mods and i found it rather slow for what it was. Personally id go for some sort of newer higher output motor.