OK, these guy's obviously arn't being much help.
If you have a 1200 orion series engine you'll need a different engine crossmember, I'd recomend buying a whole 2L RWD sigma for $50 or somthing in rough condition.
Bolt the whole subframe in, including struts and brakes, swaybar etc.
If you keep the original lancer struts for some reason, the front springs are actually the same diameter as the back so you could just use the same as the front in the back.
It's a real easy conversion.
Heres a couple of links which may be of interest.
//oldschool.co.nz/phpbb/viewtopic.php?t=4378
//oldschool.co.nz/phpbb/viewtopic. ... hlight=lsd