Enough of this sacrilegious Nissan talk. For an easy conversion go 22RC (hilux). Carburetted so you don't have to play around with wiring and fuel setups, has great torque, can whack a cam and carb on it with your budget quite easily and it will be pretty zippy. Straight bolt in affair, you may even be able to use the same clutch, don't quote me on this. If you want to get more into the fabrication/technical side of things, I would use a first gen 3SGE. Would require S series bellhousing and clutch hardware, mounts, and fuel setup. Cut and shut plenum and distributor moved to front of engine would also be required. Much easier and cheaper than SR20 for around the same power, and also more reliable given that the majority of SR20's out there are pretty clapped out. Plus, Toyotalyf