d,about the lsd for the h190,michael (1200rc) had one done for his h165 in the rallycar,& he probably still has the phone number of the person who did it for him,if it's not posted on his personal website.i've talked to the fellow myself,& he seemed quite genuine & knowledgable.plus he's in melbourne,so it's close to you.all he needs is the bit the spider gears are housed in,you can keep the crown wheel & the carrier.the only drawback is it'll only take 200 hp.hope this helps,i'm sure michael would have said something if he was online. ps he was only asking $250 dollars for the conversion when i was talking to him,too.