for the longer struts, try Sunny struts. They are the longest inserts I've seen, you could just re-oil them with some motorcycle fork oil & the wiki here has some suggestions for larger discs & calipers, usually S13 Sylvia. This conversion needs the Sunny lower control arms, steering arms,& ball joints, which should bolt into the 1200 front.
As for a cam I got a high lift 74 degree cam from Stewart Wilkins at his suggestion as a good compromise cam for rallying . This involved new springs, lash caps & lifters as well.