Xl600 lm engine into 600R frame ??
 

I have an 83 XL600R (kick start only) I have aquired (thanks ebay) an XL600LM engine and swing arm (alloy not steel) My question is.. Will the LM engine physically fit and will my regulator and cdi from the 600r work with the LM engine ?? (I realise a need a bigger battery and different RH swich gear and have these ready) all helpful comments appreciated.