i think you meant SFA. 85 was the last year a solid front axle was in the 4runner. And the first year the fuel-injected 22re was in it. All later years are IFS. Buying an 85 saves you the time, effort, and money of the swap. And yeah, that's why they're sought after. 86 on had ifs. 86-87 had optional 22ret, 88-89 had optional 3VZE V6.
85 had ugly interior IMO. Much better off with an 88-89 sr5 and doing a SAS. By the time you were to get that 85 all fixed up and looking good, you could have bought a good looking 88 or 89 and done a SAS.