1979-93 lower front control arms are all the same in regards to overall length and design. The only difference over the years is bushings and ball joints. Obviously the SVO lower front control arms are unique to the SVO.

SN95 lower front control arms break down into 94-98 and 99-04. Same overall length. The 99-04 offer more tire clearance lock to lock due to change in shape of the control arm.

If you swap all the brake line, proportioning valve, MC, etc. from the donor car there's no need for adapters. The brake bias might be off a bit, but probably work just fine. You could always gut the Prop valve and install an adjustable in the rear line if there was an issue.