I had the same problem with the aod in my 93. That was the last time that I will ever get an automatic unless I buy a truck. I to had a bunch of the parts to do a 5-speed conversion, so I did it. I put in a tremec 3550 and it was the best choice for me because I hate autos anyway. It freed up allot of power and I get better mpg to, dosn't even feel like the same car. If it is cheaper to do the swap I say go for it.
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79 hatch w/ NA 347,stage 2 Canfield heads, out of the box Victor 5.0 intake, solid roller cam, Aeromotive fuel system, proshifted TKO II.MY CAR
http://www.mustangworks.com/cgi-bin/...splay.cgi?1288
93lx all stock + tremec