L18_b110 did it too.
I don't think i'd do it again in a hurry. my ute came with a mitsibishi motor in it, and so had already been chopped and changed. i didn't want to go back to the a series after that so i went for the L to keep it datsun.
Biggest advantage of the L series is the torque. It just makes it heaps more forgiving to drive. I can take off in 3rd no problems, other than a slight grumble, I can take my foot off the clutch with it in first and not touch the accelerator, and it'll hardly even drop revs as it starts to move forward. can't be bothered dropping back to 2nd for a corner?? just leave it in 4th....
as for cornering, mine still handles fine. It has 120y suspension (i think) and handles a lot better than stock.
oh yeh, and it still sounds like an A series too!