Try not to over-think it. I removed the rear glass from my old top. Not too much involved regarding the butyl tape.

http://www.amazon.com/3M-08620-Window-Weld-Ribbon-Sealer/dp/B0039752R2/ref=pd_sim_hi_2


85 4Runner - With NEW Marlin 4.7 Gears!! It's a whole new beast!