Yes the front will bolt in. It really isn't considered a 3rd member or drop out. The front IFS uses an enclosed differential, and you unbolt the whole thing without even spilling gear oil <img src="/forums/images/graemlins/kewl.gif" alt="" />. Unbolt everything as one unit, up to the CV shafts.
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You might as well grab a CV shaft or two and also his idler arm as trail spares. With 33's you will be way happier on and off road with 4.88's <img src="/forums/images/graemlins/smile.gif" alt="" />.

'87 4runner 37x12.50x15 MTRs
SAS, 4.88's, rear+front e-lockers
4x4Him --- Christian 'wheelin
4x4Him National Forum