asv is the better engine, its slightly newer and it also the oil jet thingies. they should all physically fit, so yes just swap over mounts and all your manifolds etc from your existing engine, but thats only if you get and engine that was mounted longways rather than sideways. oh also yoll have to swap the sump for your original too if its originally mounted longways.best to stivk to an alh or asv id say as its a like for like swap