I had Jaz racing seats in my 94 for a while, and also took out the rear seat. I think it took about 60 lbs off, and I swore up and down I could feel a difference between the light front seats and no rear one. Yes, in the SN-95 you see the painted floor boards with all the ugly a$$ welds, but I suppose you could carpet it if you wanted to. I've been thinking about doing it again, when I order my new carpet, and modifying Fox hatch carpet to fit it.
Good Luck!
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Elisha (Mustangbelle)
1994 GT: Cartech intake,4.10s, full exhaust, and pulleys.
Sold the 1986 LX sedan

http://www.geocities.com/mustangbelle_306
AOL name: GT306Chick